3 months without medication and still charged

I have medication that carries a copayment that I did not receive in December or January but I was still charged. I have over 20 emails and countless calls asking for my medication. The charges are still there but there is no medication that was delivered. I cannot be paying for medication that was falsely declared delivered when I notified and called immediately to tell them the error. I don't even know where they delivered to. I have epilepsy and what this pharmacy has been doing for 3 months now could kill me.