Sealy low quality bed

I purchased Sealy georgia base set at ok furniture church street Pretoria 3 weeks ago. The bed is already sagging. The mattress is uncomfortable and it is not strong. The thread on the base is already coming off. This Bed has many defects and I don't think it is going to last for 10 years. I want this bed to be replaced. I am not happy at all. The bed is not value for money. I am really dissaponited because I thought Sealy was the best brand. I regret not buying edblo bed as it lasted me 10+years.