Second Book in service and wrongly informed.

I booked in my Tata at Renault service centre.a hoping to get good service for the second time.To dissapointment again not so helpful and very uncommadting.I ask for my breaks to checked and my gearbox.The mechanic advised me on my breaks and when it came to my gearbox he was not much clue up as it was making a clicking sound coming from my gearbox.I told him that it can be a tooth or a bearing on one of the gears the gears obviously will be fine but the noise will be perseptable.after I was told that is is the gear box the mechanic was very helpful trying to find out if I can get a curtousy car.He spoke to.the manage and the he said the latest for Tata cars there s no curtousy cars given.I was told that 8 must go to Mayfair and that they are closed and only opens on the 15 January.I called Mayfair, they were open and I booked in my car at Mayfair.The first time when I booked in my car nothing was done and I was told to collect the car,however for some reason the car could not be serviced on the day because for some reason the cambelt had to be replaced ,which to me was confusing as there was only 35000kms on the clock and it was still fairly new.So if the manager and the staff can inform me wrongly now what about the other customers.I was given a curtousy car before,what seem to be the problem now.They are not very helpful and I will encourage for people not to purchase a Kia Tata or Renault as the service delvery is unsatisfactory. I expect better.I would Renault to explain why curtousy cars are not provided to Tata drivers.This is the second time I experience this tipe of service and dishonesty.I.hope to get a reply