MTN management-****** and **********!!

Purchased a laptop in December 2021,opened it 2 days later.It worked for 2 hours then it 'died'.Took it back to the store,after a month they returned it saying it's a new one.That same 'new laptop has just died again.I took it to the N1 city store the manager said there's nothing he can do,I left the laptop and charger on the counter with him.I emailed the complaints department same day 11th November ,NO RESPONSE HAS BEEN GIVEN!!!!