Poor and Unsatisfactory service

I'm utterly unhappy with the poor service from the Beares in Welkom(31 Bok Street,Welkom Central).I had bought a bed which became unsatisfactory after using the bed for a week,after lodging a complaint I received a replacement bed which still did not satisfy my requirements as I am an elderly person in my 60s with hypertension.To my dissatisfaction,I requested a refund to buy a bed elsewhere,which I was told to provide my ID and Bank statement,after providing these documents on the 26th of March,I was told I would receive my refund within 7 working days. Considering the past public holidays,the 7 days period has passed and I have not received my refund,I'm still sleeping uncomfortably on the replacement bed,which affects my health...