Late delivery

I started encountering problems with my Samsung S6 egde a few months after purchase to which I went to samung to complain and informed them I would appreciate if I could get a new device as my current one was overly problematic for a new phone and I wasn't paying so much for a a phone I'm unable to fully use.they told me the best they can do is repair I said fine.after two weeks I was called to collect my phone only to find the same problems persisted and I was Now encountering even more problems . I took the phone back again and informed them I was very unhappy with their product and I was not willing to settle for anything less than a refund or a replacement.I was told it would take approximately 10-14 days at most to receive one. I have now been waiting more than 3 weeks I have tried numerous times to contact Samsung care center with no answer I tried contacting the person I dealt with personally with no answer I even tried Samsung head office with no answer.<br> Why do you have contact details if you don't answer .this is highly unacceptable from such a well known and \trusted"brand . don't advertise your contact details so proudly if you are not going to answer to our queries """