DEVICE NEEDS REPAIRS BUT GETS DECLINED FOR REPAIRS BECAUSE OF THE PROOF OF PURCHASE SLIP REGADLESS MY EFFORTS TO GIVE A BANK STATEMET REFLECTION THE PAYMENT

I have a Samsung Fone yam devise for less than 6 months ,i started experiencing overheating of the device ,i usually switch it of when that happens ,this one time 2 weeks ago it happened when i switched it back on it said NO SERVICE as if the was no sim cards, it took it to the nearest Ackerman's store, they checked it and confirmed it needed to go for repairs ,i must bring the box of the devise and slip of purchace ,i did come back with the box only ,i was told i will not be assisted because i did not have the proof of purchase , i then asked to provise my bank statement to show payment that went out from my bank ,they declined my sugesttion to proove i bought it there , i then caled foneyam offices iwas told they can not assist because i DONT HAVE THE SLIP AND I MUST CONTUNUE WIOTH MY IOSNTALMENT REGADLESS THAT THE DEVISE IS NOT FUCNTIONAL .Ithen asked the rule of foneyam whn device gives you issues it goes for repais you still liable for the payment ,i told them i dont despute the rule but IN THIS CASE THE DEVISE IS BEING DECLINED TO GO FOR REP;AIRS BECAUSE OF THE SLIP ,I WAS TOLD I MUST CONTINUE TO PAY FOR A DEVICE THEY CONFIRMED MUST GO FOR REPAIRS ,I REFUSE TO PAY FOR A DEVISE THEY CONFIRMED NEEDS REPAIRS AND IS NOT WORKING WHY PAY FOR A DEVISE I AM NOT USING ND IS NOT TAKEN IN FOR REPAIRS!!!!!!!!!!!!!!!