You shouldn't/can't expect the types of opioid pain medication that you are "hinting" towards from any family physician or even surgeon. These types of Docs are not there to treat chronic pain. They are usually willing to treat acute pain, which is why you've been Rx'ed things like you mentioned. So, it sounds like they've probably done their job, and if you've had a new MRI taken at a new doc - may I ask you what kind of doctor he was? If it was a generalist, and you had pathology, he shouldnt have Rxed you any more vics necessarily, but he should have offered you a referral to a pain clinic and/or opinion of a surgeon, or eventually both. Something doesn't sound right about your story? ANd if you're being up front and legit, then yes you have been mistreated.
How many different urgent care, ER, family practice doctors have you been to with the intention of treating this pain you speak of?
What about the surgeon who treated your back before? Where is he? What about the generalist who referred you to THAT surgeon?
You had a "disc" removed? Well, in that case - it would have been replaced with something. So are you saying you had a fusion? Or are you saying you had a portion of a disc removed, aka a discectomy?