Car Service and Repairs

My complaint is about a not so good service received from Lindsaysaker Midrand. I took my car in for a service on the 05/09/2018, replacements were done (180km service, consumables, v belt, ribbedbelt, spark plug, oil filter, pollenfilter, 505.0/505.1 oil and airfilter) as I was told its going to be a major service. I eventually got my car back the same day afternoon. Thursday (06/09/2018 and Friday(07/09/2018) as I was driving I could feel that my car is not driving well as I know it, it did not have power and making some funny sound. Monday (10/09/2018) I took it back to Lindsay Saker Midrand where it was serviced and I explained on what is happening and I had to leave the car for them to check on what could be the problem but the Technician/ Electrician said he knows what could be the problem because he tried to start the car and he could hear the sound ( something to do with a coil somewhere in the spark plugs as it could be broken). I never got and feedback through out the day from Louise on what is happening or what the exact problem might be. Same day in the afternoon I had to go back to them to find out and I was told they did some diagnosis and they detected a misfire but they managed to fix. As I put the key in the ignition, the car starting the noise was still there, same noise I complained about when I left it in the morning and it was also shaking. I was told I can still drive it though a misfire was detected but will have to bring it back next day to be checked out again. Next day came which was Tuesday, dropped the car for checking and fixing, no communication from Louise and I had to contact her to find out she promised be me call back, and she never did. Went again to the VW to find out, she told me that they have found the problem and its something to do with wiring, and they will have to replace, repairs at R3000K. I got so devastated from that because I had just paid R5000K for the service they did and my car came back not good and now I am told I need to pay again? After we had discussed I eventually agreed for them to fix the car as I will be travelling far on Thursday morning. I left the car overnight for them to fix. It's a new day 12/09/2018 - 12H23, I have not heard anything from Louise, I have also tried to call her I am told she is busy. I am so so frustrated it beyond word because I had to use taxis to work and worse I am not even contacted for feedback or atleast be offered a car to travel with from and to in the meantime they are trying to figure the problem with the car. I am not sure how it works but customer services is just not there.

I would like to be contacted on the matter, I am really not happy.