Poor Customer service(tv complaint)

Hello Peter I would to lodge a complaint about the dissatisfaction I got from Game store.2019 my elderly retired father bought a brand new Hisense 68inches tv from the store during black friday.Upon arrival,the Tv was faulty and they did not want to exchange it.What was disheartening was the fact that the case dragged for months with no help until we contacted the customer care service,that was when the case was resolved. Fast-forwarding the time,This year the replaced tv got damaged(Power on malfunction). Consequently,My father went back to the store to inquire if they could fix the tv since it was still under warranty and He(my father)lost the slip.They requested a bank statement as prove of purchase to fix the tv.He submitted it and was told he will get a response within two weeks.Thereafter,Whenever I tried to call the store to do a follow up.I've been receiving excuses on."The admin is the one leave,we cannot print the slip"," We will log a call and get back to you after two weeks".These people have been taking us pillar to post since February untill now.

We would like to get help from you because the tv is running out of warranty and the store have not been of good service.Your help would be highly appreciated