Vessel spasms can be a problem. If the meds aren't helping and your doctor isn't working with you, perhaps you could get another opinion. I don't know how much pain or how long the pain lasts when you have a spasm. But 10-100 angina episodes a day seems excessive.
I have been on Diltiazem for over 45 day's. And have tken Verapamil for over 4 years, I just can't believe their is nothing to do for this ever day i have between 10 to 100. Lately it is getting worse I feel like the one that isn't going to stop is going to happen real soon.
How long have you been taking the Diltiazem? It can take 2-3 weeks to notice improvement.