Faulty Bed Base

I went to complain about the sleep master base which is sagging and noisy when one moves. One of the consultants called a call centre to log the complaint (Not sure wether it was the sleep master call centre). The complaint was logged on the 23rd of March 2016 and promised a call back a week later which I am yet to receive that call. This bed is not even 3 months old, I livid at the service I am currently getting, I am still paying the monthly premium, the Mrs and I are starting to experience back issues because the bed is not leveled, It's nothing hectic but there are discomforts experienced with our backs. The bed is clearly beginning to become a health hazard. As things stand I am not a happy customer at all with the product. I need this base replaced ASAP!