Poor service & no response

Team came out to repair my dishwasher. Charged me R1850 for “programming”. Within 5 minutes of them leaving the dishwasher was no longer working. I contacted them and was told they are doing a u-turn - 7 hours later they returned, looked at the machine and I was then asked to video the dishwasher as I switched it on and send it to the cell number I was given so that they could determine what the fault was, which I did. As at todays date, no reply from the technician. This was seven days ago