Never buy from Dial-a-bed

I bought a mattress from Dial-a-bed Parkview in September this year. During the purchase process I made it very clear that the mattress is for my dad. The lady recommended a R2 000 mattress as I mentioned that I did not want to spend too much, but no where during this process was the weight limit discussed. After spending the R2 000 and 3 months later the mattress is already showing signs of hollowing out. I went to see the store and was informed that the mattress has a weight limit of 75kg and I should have checked it before I purchased the mattress. I obviously do not buy mattresses on a regular basis and did not know to check out for that, one goes with what is advised. I was never asked for my dad's weight either. If I knew that I would not have spend R2000 on something I know would not work. Went to the store and was asked to send photos to the store for attention Helen and did that. That was the last I heard a thing from Dial-a-bed. Did not even get an acknowledgement of receipt of the mail. Followed up several times with absolute silence. Zero after sales service and what a waste of R2000.