None... never delivered engine

I run an automobile repair facility in Florida. I ordered an engine from Greg Mahoney on April 26,2012. As of this date (June 13) I have not received the engine. He lost it in shipping, was an excuse for two weeks, and finally I requested a refund, so I can purchase an engine elsewhere for my customer who is becoming irritated with Cylinder Head Specialists. Greg Mahoney said he would give us a refund - which he hasn't done. As of June 11, his company charged my debit card yet again. So now, we are without the engine that was originally $2705 - and he owes me $5410!! Bad company!! I highly recommend finding a different avenue of service than these people.