Date for servicing

I phoned Renault Bryanston this morning to book my car in for the yearly service (2nd Year). I gave them the registration no. FD68GJ GP Mileage 18.000. km. They can then check that I purchased the car at the end of February 2016 1st registration took place 4.3.2016. I then asked them to please give me a date when I would qualify for the service as the previous year I had booked it in January 2017 and when I arrived with the car I was told I did not qualify yet for a service. So I wanted to avoid this scenario of wasting half a morning driving there and to be told I did not qualify, make a booking for some future date. The clerk asked when I would like to bring it in. I decided on Tuesday, 6th February and was then told that they could only get approval of the service on the day I take it in. They could not confirm whether they would get the approval. This is totally ridiculous. In the last few years i have bought four cars from the establishment. From receiving excellent service for the first three cars there has been a radical change in the customer care service the last 18 months..