Complain - I am not happy

I took book my car for 60000 km service at Nelspruit , Haval H2. My car reached 60000 km on a weekend, I then cald Haval on Monday to book for a service and they gave me a date for Thursday.

I traveled from my Trip where I was and came back on a Wednesday to take the car for the service.

I was told to pay cash for that service or my car won't be serviced. I was told it is because it passed 60000 km.

That kind of information was never shared with me be, the sales consultant even indicated that it is a first time he hear that. Is an information that he also didnt know.

I had to pay cash or else my car was not going to be released even I told them that, it is new information to me.