horrible!!!

When I first bought this mattress...feb. of 2010...it was'nt so bad...but after sleeping on the mattress for about 6 months, it started singing in the middle..on the sides and sleeping was becomming more and more difficult....I went back to QVC and explained my problem and they have been jerking me around ever since!...they first gave me the # to pedicsolutions...they said under no circumstances will they reimburse me any amounts of money back...and Qvc had said that the warranty did state that they would either give me a new mattress or refund money back!..QVC said they sent it to their customer care center for a resolution and would have an answer within 10 day's...today is the 9th day and today QVC has said that I would have to work with the warranty dept. at the place where the mattress was made...I then called Pedicsolutions back and they will replace the mattress but not refund any or partial 0f my money back!...why would anyone want another one of the mattress's that caused so much discomfort in the first place????..I then asked to s/w a supervisor which said he will have someone over him to call me back...ha!...it has been hour's now from the time I s/w him and he had said it would be within an hour's time!....I paid almost $700.00 for this mattress that is now a piece of junk!!......I am very upset over all of this and there seems to be no resolution in sight...I recently purchased a Serta and believe me I wish I had done that first!!!.........BUY A SERTA TO BEGIN WITH PEOPLE!!!!!!!