Shocking Customer Services

to cut a long story short, we bought a microwave from Game N1 City in August 2019 (microwave has a 2 year warranty) cash, misplaced the slip, and now the microwave is not heating and making a ticking sound when pushing the "start" button. I have been dealing with Angelo, gave him the barcode details, the exact date we purchased the product, and serial number of the unit - this info was given as i was told that Game head office would be able to check on the system for the proof of purchase. I spoke to Angelo on the 23rd March 2021, and he said he will liaise with head office, I followed up with Angelo on the 2th March 2021 to see if he had any feedback and he said nothing yet. I phoned Angelo again today, 29th March 2021 at 12:47pm and he said again that he hasn't had any feedback. I requested for the head office number but in so many words, was trying to say that he can't give me the number. We as a family have been sitting without a microwave, for 1 day shy of a week, with no feedback. Please keep in mind that I went to Game N1 City with the unit on the public holiday, 22nd March 2021, but they couldn't help because their system can only see back to 3months back. I feel that because we do not have that slip, it is too much much of an effort to help a customer and because it does not affect anyone but my family then no-one is bothered. Someone, PLEASE ASSIST me our microwave is not even 2 years yet.