I purchased a rebuilt transmission from this company on January 8, 2007. I paid for this purchase with my VISA card. It included a $350 core charge. Although they said the transmission would arrive in 3-5 days, the transmission didn't arrive until January 22, 2007. Although I could have installed this myself, in order to keep the 48 month warranty I paid $475 for, I had to have the transmission installed by a professional shop. I did so, and got my truck out of the shop on January 25. That day, I sent the core back to them. To date, I have not received my core charge refund. I have had countless phone conversations in which I was assured that my refund was in the mail. This company obviously has no intention of refunding my money.