Cal Cover Products Sold defective cover and refuses to replace or even contact me back Chino California

Purchased a cover on ebay from this company after jumping through many hoops to get their information and contact information was told at their company someone would contact me back well it has been almost a week and no reply, they sell these covers with a five year warranty but was told that not all sales they make come with the warranty, my cover is defective  and I paid $210.00 for this and all I am asking for is to stand behine your products, if it is defective then man up and deal with the problem not just ignore me, I am not going anywhere I want this cover replaced because it is junk they sold me defective junk, all I want is to have a non defective cover!