Bad customer service

Worst customer service ever... after trying to get hold of manager at westgate mall Phillip regarding samsung A70 phone that has been giving problems since day one ...phone was sent away came back factory default up till now I'm sitting with broken phone and paying cellc religiously...I have dealt with everyone at that branch each telling me a new phone should have being issued in first place ... not one come back from cell c yet ...angry and frustrated...I have all papers endless phone calls to no avail