Meyers Motors is a ****

Took my Opel Astra coupe to Meyers Mortors, East London as it had a problem with a boot and they booked the car in so that they can get the correct sample for the part - the car was with them for two days. Eventually they told me the quote and asked me to pay a deposit of R10 360, which I did. Months later their part arrived and I was advised to book my car in to fit the part. Days past by without any call from them until I called Meyers and I was advised that they ordered the wrong part and that they will have to order yet another part which will arrive end of May and I then asked for a refund which took weeks to process and to my disgust the refund is R5700 instead of 10k I paid.

Does this mean I was charged for their stupidity when they kept my car for almost 5 solid days without telling me their ordered the wrong part? I wasted fuel and time to drive to East London and back for nothing - do Meyers Motors Management understand the financial implications I suffered?