why would a pain management doctor be SO MEAN to someone....????

 I will start off by saying I had rotator cuff surgery due to a rear collision accident, then after surgery I started feeling upper back pain, my primary physician tried all the meds he could and now I finally found some meds that actually helped LOWER the pain level, I am on 100 mcgrams of fentanyl and a mild muscle relaxer. I went to see a Pain management specialist and he acted like I didn't need that strong of meds first of all, then after my second visit he gave me 10 trigger point injections on my shoulder and gave me a script for antflamatory and a muscle relaxer and said  that would work, but as he seen in my file I had the exact same thing done 3 months ago and I was still in pain...

 He makes me feel like I am an idiot and his words were, "You cant be in that much pain,your mri came back clean.....

 I feel he thinks Im faking this or something... 

 What should I do NOW???? Just give up and deal with the daily pain or what....

 I really need some assistance with this PLEASE

 Thanks