The only advice I can give (but I think it's damn good advice & and it's advice which has been echoed by other posters) is to find other dealers and users. Develop your connections by going through different people, and when the time comes YOU will be the one ignoring the dealer, because that asshole didn't respond to you within ten minutes of your text/phone call and you've already got another source coming through. If someone thinks they have a monopoly on some drug you desperately want, forget it, they will become totally complacent...develop your connections and reward good business practices.
Whenever a friend of mine wanted drugs he would send a mass text message to every dealer he knew and the first one to respond (usually within the first few minutes) would be the one he'd go through. That's how it's done
Hell yes! Plus one to this! That's a fucking awesome bit of advice man, couldn't have put it better myself! And your "friend" sounds like a wise man, haha. Personally, I never had any problems finding drugs until my heroin problem escalated into full-on addiction. Unfortunately ironic that when my need for a drug grew greater than I'd ever needed a drug in my entire life, for fear of terrible sickness coming on, I found myself relying on the fucking slowest, douchiest group of dealers I'd ever had. I was used to buying all sorts of drugs, but primarily weed, and without fail I'd call one of the many guys I had that sold it and they'd be at my door in under fifteen minutes. Fucking heroin dealers though? Forget about it. Literally every single one of the bastards was ALWAYS going to be ten minutes or fifteen minutes, and without fail they'd always always take longer. It didn't make any fucking sense why they all lied about it, when I clocked how I was being taken for a mug by all of them, the first thing I did was tell them all that if they're gonna be blatantly dishonest about how long they're going to be, don't expect me to call them back more than once, and I'll take my business elsewhere. When they were all used to that, I'd do a similar thing to you, Burnt Offerings, I'd call all of them to get a quote on how quickly they could drop me however much I wanted, and I'd go with the fastest one. I allowed them ten minutes leeway, but if they said 15 minutes and 26 minutes later I still didn't have heroin in my possession, I'd call them and tell them that I had to go. If they tried to get mouthy I'd just tell them that the reason I asked how long they were gonna be was because I was going to work, and that next time they should be honest about how long they were going to be. It didn't take very long of this at all for a couple to stand out as being consistently reliable and speedy all of a sudden, and before I knew it I'd "trained" my group of heroin dealers to be just as good as the weed dealers I was used. In my experience, a lot of dealers will treat you like a mug if you let them. If they know that you'll happily wait an hour and wait patiently like a little dog then they'll do that and prioritize their customers that hold them to their word. You've got to appear to adopt the mindset that they want your money more than you want their drugs - you have to present that image at all times, because if they sense that you need their business more than they need your custom, they will essentially treat you like a bitch.
I don't know where you live OP but unless it's in some backwater little rural village in the middle of nowhere then it sure as hell shouldn't be a seller's market, no mater what the drug. The only little caveat I'd add to Burnt Offerings' brilliant post is a little piece of advice if you're still networking and branching out looking for new connects but haven't found any yet - you have to make sure you can back up the threat of taking your business elsewhere with aciton. For example, if you bluff and tell your guy that you have to go somewhere, or that if he messes you around you're not gonna buy off him, and he calls your bluff by fucking you around and you buy off him anyway, you're still gonna be putty in his hands. Now, I can't be specific here because of the rules on sourcing, but we live in the 21st century mate, nobody with money need to go drugless these days, do some research on the deep web. I can't be anymore specific than that for fear of reprisal, but if I were you, I'd use the deep web to your advantage, buy some of your DOC, and then call your guy and if he messes you around you can tell him you're going elsewhere and then just dip into your stash. Rinse & repeat till your dude fixes up and starts treating you like the loyal customer you've been. If you clarify what your DOC is I can give you some more specific tailored advice on where to find new connections for it if you're totally stuck.