Bad customer service

My geyser was not heating up, they said the element and thermostat is damaged needs to be changed quoted R3000, they changed it gave me a 2 year warranty ,4 weeks later the geyser is faulty , called them they came and assessed and said the thermostat is faulty, well instead of changing it the plumber/electrician said he doesn’t have it in his vehicle he will go to the office to collect and come back, I’m still waiting, I hope they sleep well at night.