What a mess! I certainly can understand your deserved frustration. I guess that is part of the fallout of our improved, integrated narcotic watch system. Unfortunately, there are lots of drug seekers out there and it just makes it miserable for those of us who are just trying to function. You'd think that your doctor who you have a pain contract with should be able to override that nonsense. But, that is a separate issue.
I would suggest that you do not assume what your GP or GI would do, and sometimes it can be a different thing if you are sent to the ER by your doctor, rather than just showing up on your own accord. I summarize medical records for my job, and one of the things that drug seekers do is run around to ERs in pain, without being referred by their primary. I am not saying that is what you were doing, far from it. What I am saying is that having your doctor send you to the ER adds that layer of legitimacy that might be what you need in your area. Maybe not, but worth considering. Primary doctors know how to recognize and treat a fissure or refer to someone who does.
If this is a fissure, you probably can be most helped by topical anesthetics than oral narcotics. The reason being that with your sphincters in spasm, the blood supply is diminished and systemic drugs just do not get there very well. You can get a prescription or just try over the counter hemorrhoid creams. Even Anbesol (for teething) is OK.
Also, hot sitz baths are the primary treatment, 3-4 times a day for about 20-30 minutes. They help relax the sphincters, improve the blood supply, and aid healing.
Hopefully, these measures can help get you over the hump until you can see the doctor who can help you.
Jan