Bad customer service

Brought a microwave in Nov 2022. Microwave broke during February 2023. I have phoned a million times, no reply, I have been to the store x2. The first time the floor manager wanted my bankstatement as proof of purchase, the 2nd time I visit the store on the 7th March 2023 with statement. The manager promised to phone me back within 2 days regarding the warranty. Today, the 11th March 2023, I phoned 3 different tel. Numbers. No number is working. I just don't get any assistance from management. I even went so far to phone the mall security to give a message to the game store manager but no reply. This is absolutely the worst customer service ever.