Sony M4 Aqua not repaired

About 4 weeks ago I booked my Sony M4 Aqua at Mall of the North for a repair. The phone starts up normally but after using for a while becomes very hot at the back and then shuts down. In the end the phone would not start up past the welcome screen.<br> <br> I collected the phone today and after the first start up it went for 5 hours and then turned off (without sim card or memory card inserted). Now it's doing it more often and I'm sitting with the same problem I had 4 weeks ago.<br> <br> The Cell C consultant confirmed that a part was replaced. It is clear to me that my phone wasn't even properly inspected and I highly doubt that anything was replaced.<br> <br> Furthermore I am 110km from my nearest Cell C store and the trips alone are starting to add up to the value of the phone, not to mention the inconvenience of having to work with an old backup phone for 4 weeks (and the foreseeable future).<br> <br> I am not happy with the lack of service from Cell C. I am not interested in driving back to Polokwane tomorrow to go through the same 4 week delay without results. You need to come up with a better solution.