Samsung poor service not keeping up to warantee agreement and blaming the customer

Extremely poor service received from Samsung recieved, my Galaxy S7 was booked in for screen repair under warranty, initially they did not accept it under warranty "Due to negligence " there after a battle and did get confirmation it will be repaired under warantee by linda ( all calls recorded )at samsung headoffice complaints. She had indicated that once device ready the repair centre will contact me for pick up. Two months later i gave a courtesy call the response i get is that the device was not going to be fixed under warantee. the device is now out of warantee and samsung refuses to assist.