lack of customer service

Hi,<br> On the 30 September 2015 is went to Bmw in Leo Haese Hatfield branch for an oil service, and I also told them to recheck my air con re gas. They wanted to charge me again for the re gas I refused because in winter my car was there for the same thing which at that time they did a regas but it was not blowing fresh but hot so they wanted me to live it for the next day to check for leakages I told it is impossible because I use my car to work and home then I told them that I will make time for a re-booking. So on the 30th I was told that they did do a regas and that there are no leakages but it is not blowing fresh air so the technician needed an additional time to see where the problem might be which is chargeable I refused and asked why that was not done on the first regas. I still feel that I was A being ********** because I paid for no regas or no service. On the 01-10-2015 I was refused to obtain or get a faults/ diagnostic report after the oil service same as on the 30-09-2015, I asked them why they told me that it is the BMW policy, I asked them is it the BMW national or their own branch policy but still they couldn't answer me this was the technician and the service advis