I tried gabapentin, but I personally did NOT care for it due to the side effects. I was shaky, and had terrible nightmares! It was prescribed in addition with others meds for PTSD, Panic disorder, depression, and GAD. I'm just stating my personal disregard, but if its working for you stick...
I had a similar issue....ALMOST exact issue. I told him bugger off. Its a SCAM baby....if it wasn't originally agreed on? Its a void agreement. They trying to "milk the cow" with excuses as long as they get away with it. Stupid business practices in my opinion.