LG technician - Not sure whether ********* or just ***********!

My wife reported a faulty washing machine MOTOR (still under warranty) to LG. The LG-contracted technician insisted that it was in fact a faulty sensor that needed to be replaced and charged R370 for this part. We tested the machine as soon as he rushed out of the premises, and it unsurprisingly broke down once again. We immediately contacted him (hardly 15 minutes after he had left), but he had the audacity to say that he was now on leave and unable to assist. We were then shunted from pillar to post (this includes the unhelpful disinterested LG call centre staff - calls are recorded so I invite you to follow up on their actions, or lack thereof!). Days later, a second technician eventually had a look at the machine and (surprise surprise!) agreed that the motor needed to be replaced. To add further insult to the appalling service, he went on to show us that the old sensor that was replaced (and that we were dishonestly charged for!) was perfectly functional. We then contacted LG requesting a refund for the money that was "******" from us for a perfectly functioning sensor - we were promised a response which is still forthcoming!!!