Has anyone ever had trouble getting reimbursed from Caremark for diabetes testing supplies?

In August of 2007 (11 months ago) I purchased test strips for my One Touch glucometer. I called my insurance company to ask what they needed me to send in. I sent it. No reimbursement. I called again and they said I needed a special form. Again, I sent it in and no reimbursement. Then I was told the address was wrong. Now they are saying they have no record of my filing the claim (although they did before). I think they are trying to get me to give up. I cannot afford strips out of pocket and this is what I am paying insurance premiums for to begin with. They are supposed to cover diabetes supplies. Does anyone have any suggestions? Should I go the Better Business Bureau? Should I consult a lawyer? My hemoglobin A1c keeps getting worse because I have not been able to purchase test strips without reimbursement. I feel like I have a valid lawsuit, but I am only one person going against a big corporation. Any suggestions would be greatly appreciated.