Poor workmanship

I have booked in my handset four times in 6 days for the same problem at the Samsung service center in Morning-side, sandton, of which each time i was assured that the problem was fixed. Today the handset has stated doing the same thing again and i am tired of driving up and down to the service center because of poor-workmanship. These guys claim to be specialist in repairing Samsung electronics, quiet frankly i am tempted to take my handset to an independent repairer.