Middle of March Purchased a Serta Mattress $750 along with a certiciate for a free comforter upon dilivery--When dilivery came no certificate --called Shop NBC C.S.-They told me cerificate would come in the mail--waited a while --never came-called again C.S. told me I had to call Serta --called Serta -they said it was Shop NBC resposibility however Serta would not honor the certicate because it ened March 31st--Call NBC again--said they could do nothing about it-That anyway I needed to spent$787.00 to quailfy for the certificate (I did bought... read full review »