Faulty Samsung Microwave

I purchased a new mivrowave from game on the 09/05/2018 and unfortunately moved houses and lost the proof of payment which is my till slip,early Dec MICROWAVE STOPPED WORKING it could not warm the warm only makes the sound as if its warming but the food remains cold.I went to Holidays and January the 20th i visited Game Stores Tygervalley centre with the Microwave and my bank statement to reflect payment made to game , i was informed they need to send my card no details to the head office to request the slip to be pulled from their system, I was assisted by the lady named Phumeza/Phumzile and she told me i cannot leave the microwave i must take it with which i did, and they will call me after 3working days.I called Game the next 4 days and i was informed nothing has been received from Head Office, i should wait again.but no one from Game is bothering to call me maybe its because i dont seem important enough to them .I called game today the 2019/01/29 and I spoke to Ebrahim/Abraham who seemed soo not willing to assist and told me i souhl wait on Phumeza when i asked to speak to Phumeza since she is the only person of my race who can assist me, he told me she is out.Meaning i had to drop the call .I asked him if he cannot follow up with head office and call me he said Phumeza is the one that knows my story , the same Phumeza that told me she is not working by Customer Service but was only assisting i need game to please help me with this i cannot be buying 2xmicrowaves in the space of less than a year, i bought samsung at game because i thought i could rely on it and them but i am extremely irritated with their treatment.