Fiat Strada 1200 EL

I want to enquire about my vehicle that i gave in at a Union Motor for a service.<br> <br> They used the wrong service parts and my vehicle broke again. After a gave them a week to service it before i collect the vehicle <br> <br> I am now waiting since last year 22 Desember 2014 for my vehicle to be repaired.<br> <br> I spoke to the dealers and they are still waiting for parts. They have to do my whole motor over.<br> <br> I enquire about the motor at Fiat with a Mechanic in JHB and ask him about this. He said even if they fix the vehicle the motor wont last, it will brake every now and then.<br> <br> What can i do about this. I don't want a vehicle back if it is going to brake every now and then<br> <br> How long is the service valet a year a month, and if it brakes again. What then.<br> <br> I can't keep on giving the vehicle back.<br> <br> How do i know that all the part are genuine and what happens if anything else broke while standing there and working on the motor.