very bad expirience

I have had the worst experience with Vag spec Klerksdorp I booked my car for service on the 19th of August Which I called in on the 16th of August to make a booking. On that Friday when I called spoke to a lady by the name Tanya Asked her if they work with service plans which she said yes and we discussed the details on the phone and she said I must sent her details of my Service plan as I informed her I already spoke to them and all she have to do is get authorization for Monday which we agreed on, to my surprise Monday the Day of service she sends me a quote on WhatsApp, and I asked her if this just my invoice to show what has been done with the service and she tells me that’s the money I need to pay before the car can leave the workshop my question again was did you inform the service plan as discussed on Friday, and she said no I have to call it in but I must know the car cannot leave the workshop until it is paid even if I get the auth. I did get auth even though the service plan authorized for minor service and the car was due for major service. On that Monday because was already late she told me actually they have only assessed the car so I can take the car but have to pay R850.00 for assessment which I did pay okay after I picked up the car Monday afternoon when I use brakes my dashboard lights go on which is something my car never did before I informed Tanya about the issue because I had to bring my car back for service on that Wednesday 21st August, she said she will tell the tech to check it out I took my car in that Wednesday with the hopes that everything will be fine, long story short I left the workshop about 5 pm in the afternoon But when I got there after she said that the car is ready for pick up, I got there, and the service lights were not reset which I instantly picked it up and service book not stamped Car full of rats **** on the passenger side which I think came from the engine when they replaced the pollen filter dove the car nonetheless only to pick up that my dashboard lights still comes on when I brake I called Tanya again informed her of my encounter which I was not very happy with and she said she did inform the tech but she will follow up why it’s not done. I went back again to the workshop the next day which I met a very rude tech who made me feel like I do not know my car and told me them servicing the car what does it have to do with all those problems I pointed out and mind you there was air con re-gas done on the car and even when the air con is switched off is still blowing. I also later discovered my back seatbelt buckles have disappeared, and my bonnet is not opening. This was the first and last time I took my car to that workshop.