Unfair treatment fromEAE motors

My wife bought a car to the abovementioned garage.,in February 2022,after it being taken for roadworthy,it was found that it had a defect with handbreak button ,I was advices to take it to any registered mechanic which I chose to take it to BmW in Vereeniging,On the 7/03/2022 I receive a call from garage EAE to say I must go to w to collect a car n bring it to their workshop ,I asked why as they told me that they only doechanical not electronic as it had electronic defect I then told th that I won't go to collect my car they need to collect it themselves ,I suspect that they didn't want to pay the quotation from BMW .now my problem is that I no longer have interest in that car,I would rather go n get another from other garages as their service to me was poor .I would then like to get help from you with regard to my problem.