Taking advantage of the elderly - ******ion

My mother in law (aged 79) called AAA Plumbing due to the fact that there was a problem with the geyser. The yellow pages advert stated 'No call out fees, Free Quotes & low charges'. The consultant came out and after inspection explained that the thermostat was faullty. He asked her if he could go ahead replacing the thermostat. she agreed and the repair was done in 15 minutes. She noticed that the bill came to R1710.00 but paid in cash anyway not knowing what a thermostat's cost is. She phoned me and explained that her geyser was repaired at that cost. I thought it was very expensive and phoned our local plumbing company. They quoted that specific thermostat at R135.00! I was furious and phoned the callcentre and left several messages. Nobody returned my phonecalls. My husband then phoned and spoke to a Mr Haroon. He explained that the manager would phone back - needless to say,nobody returned the call. Date of service as 28/01 - Invoice no.115875. I reported this to the IOPSA (Institue of Plumbing SA) , the rep**** to say that AAA Plumbing was not a member and that they could not assist but also indicated that that the invoice was to high. <br> Kindly assist in this matter.