double wheel ab roller / non delivery

I ordered an ab roller fom A1 nutrition on April 25, 2008. I paid $11.89 plus $5.95 shipping which was billed to my checking account via debit card. I was emailed saying my order was not available and had to be on back order but only after Ihad to contact the asking where my product was after almost a month. I was then asked if I wanted to be placed on back order and I agreed. On July 1, 2008 I still had not received my product. I was again told it was still on back order. In the last month I have sent at least 3 emails asking about my product and asking for a refund in which I have recieved no replys. The customer service number I was given with my order does not work.