Dissapointed in the reputation that SEALY Boasts

Good Day,<br> <br> I have a Sealy Santiago which I purchased from Bears in Festival Mall about 6 years ago, and to date I have have to change the bed onve before due to the middle region, I find myself stuck with the same problem again.... How do we go about resolving it? Do I contact them again for another exchange?? Its very disappointing to say the least that in buying a SEALY we thought we were getting the best on the market, but seems all we got it a sinking ship :(<br> <br>