POOR AFTER SALES SERVICE

I returne an item which was inferior make and broke within the first attempt to use it. On returning it I the lady at the counter was extremely abrupt and showed some disdain towards me as a customer. This is not the first time she showed such an attitude towards me and I was hoping she would not be on duty. Their service when returning an item is poor. I called the call centre who promised me they will get the manafger in charge to sort it out and call me. It is more than a week and no response. They only care about us when we spend our money there but dont give any after sale service as far as I'm concerned