Cooper HT tires

Last month I had to make an emergency trip from Fl. to Nc. I had to replace the tires on my truck . It was a 3 day trip......I could not keep my truck tracking straight. Plus every day I had to put 3 + lbs of air in the rear tires. I finally had to stop and replace the rear tires with Michlins. I had them for 3 days and less than 700 miles. After I replaced the Coopers I lost no more air and I no longer had to wrestle the steering wheel to keep the truck in my lane. When I got back home I returned the two bad tires to the dealer and they sent them back to the distributor. After a couple of weeks they determined that they were out of round and would refund my money. I paid $388.00 for the two tires and yesterday the dealer called me and said my refund was ready to be picked up. When I opened the sealed envelope and saw the receipt I saw that they were only refunding me $288.00 so it cost me $100.00 to buy those tires. My advice is do not buy Cooper Tires. I had contacted Cooper prior to replacing the tires and they told me to return the tires. So much for standing behind their product.