Poor quality mattress

We have purchased a Sealy mattress from Sleepmasters. .We purchased the mattress cash for R4000+ (cant remember exact figure ) in December 2015 and it was delivered in January 2016. Last month already the bed is just on another level, its like you are sleeping in a couch. When sleeping in it you just go in, its like its made of sponges or cotton wool only. We wake up very tired. I was gonna say it is our weight but it cant be as I weigh 56kg and my husband weighs 60kg. I even stopped sleeping in that bed because its like sleeping on the floor.<br> <br> We are very disappointed on Sealy,the way we trusted the brand. We just dont know what to say about it. Now that means we are back to square one. We do not have a mattress. That means Sealy mattress lasts for only 2months.