Sleep Number Bed Set Review

We had the sleep by number bed for about 5 yrs. My side began losing air- contacted company was told since I didn't have their base it voided my warranty. We purchased a new Serta Sleeper.  When we removed sleep by number my side of sleeper was full of mold/mildew inside the air chambers. Contacted company after the mattress had been removed to let them know about the problems. They in turn changed their story and tell me 'oh-is would have been covered you should have contacted us.'  I was furious! I did contact them to no avail.  But I love my Serta!