Autozone Damaged Engine memphis tennessee

In october of 2013 the 6 tower coil on my 06 ram srt went out. I was in iowa at the time working. I live in ky. I checked several places and autozone was the only place that had it. My truck has 2 coils a 6 tower and a 4 tower. The 6 tower was bad but i bought both coils to replace. After installing them i started the engine and there was a loud knocking sound. Like a spark knock. Before i could shut the engine off there was a sound as if metal was breaking. I removed the coils and took them back and explained what happened. They said it was the correct part and showed me their computer where it had it listed as the correct part for my truck. After some lengthy research i found that the coil they sold me was not for my truck. It was for a chrysler v6 engine. This coil was wired to fire in a different sequence than mine which resulted in a bent pushrod in cylinder 3. This also resulted in the valve springs on that valve to break thereby dropping the valve into the cylinder and causing damage to the piston. My truck had to be hauled back to ky and ive been out the cost of a rental vehicle. Autozone initially refused to do anything so i filed a complaint with the better business bureau. After that they reopened the investigation in february. It is now april 25th 2014. They are now ignoring my emails. I have asked that my engine be rebuilt by the dealership and for reimbursement of the cost of a rental and the haul bill to have it shipped to my home. I want people to know how i am being treated and to encourage them to go elsewhere for their automotive needs.