Pathetic service and handset support

I upgraded my contact in November this year and got a Samsung S24+. Two weeks after getting the phone it started with "moisture or foreign material detect on the usb port" errors. I took it to the Pretoria Customer Service Center and it was "repaired". I replaced the usb cable with a brand new high end cable and bought a Samsung Wireless charging pad. The phone has started giving the same issue again, it wasn't even plugged into the cable at the time it started??? Must I now keep wasting my time and fuel to take this phone in for repairs every two weeks?? IT IS A BRAND BEW PHONE LESS THAN TWO MONTHS OLD!! - Both Vodacom and the repair center refuse to replace the unit under warranty - I just get bounced around