ultra bad repair service

I have a laptop on contract with MTN which has a dud battery it was sent for repair and came back with the same problem. After 4 days switched off it would not switch on again without charger connected. The instructions to the repair tech stated what the problem is, it was sent in a second time and they stated no problem found after extensive testing. I was also tol to pay a fee before the laptop would be returned. When I collected the laptop from Richards bay MTN I first switched the laptop on to prove it was still faulty with witnesses present. First Technology Group Tel: +*** | Direct: +*** | Mobile: +*** | Email: ***