Worse Vehicle Brand

Fiat fiorino Worse mistake ever doing business with Fiat motor group, the service is horrible. I have fiat fiorino that was booked in for repairs a month ago and it is still under warranty ,apparently the vehicle is misfiring so they changed the injectors and it is still misfiring so they said they need to strip the engine which is still under warranty but want me to pay R7400 excl. vat for them to strip to find the fault. I am reading through all the hello peter reviews and I see this is a common problem with the Fiorino but their head office fails to acknowledge this. Jaishree