Bosch Service pretending to be ECU Centre

I contacted ECU Express to help me resolve and electrical/ECU issue and they took down my number but someone from Finches Motor Centre t/a Bosch Car Service FMC called Taz Naidoo called me back and pretended to work for ECU Express. I took my car to ECU Express in Kya Sands who seem to share premises with ECU Express and my car is not fixed and it has been back 3 times. I would be very careful before using this company and ensure you are working with ECU Express when talking to the person who answers the phone. I look forward to Bosch refunding me for the work not done.