Horrible service from the service side at Renault Nelspruit

Bad, horrible service ever, on the 28 of January i took my car in for service, they quoted all the things that needed to be replaced including brake pads and i payed for all that, after picking up the car i noticed there was a funny sound coming from the brake pads, i thought maybe its because they were replaced which never happened before, on Monday 17 February i called them to ask if i can bring the car in to be checked and it was booked for today 19 February.

Now they are telling me i need to replace a disk and the new brakes they changed last month and telling me a lot of stories that i don't understand and no one can explain clear to me. I've serviced my car there since i bought it 2012 and everytime i took it in for service they will always put all the old things they replaced in the car for me to check and throw it away my self. For the first time all the things they said they have replaced were not in the car and now my car is having a problem and they are saying i should have asked for them. I'm so angry at the service they are giving me and not prepared to pay for new brakes that didn't even last for a month.