Treated like a ******** by Mercedes Century City

I conacted Mercedes Benz Century City on 9 Oct 2020 to make booking for my final service. I asked the lady who answered the phone to check when the service plan would end and she advised a date of 20 Oct 2020. She howeever stated that it only needed to be by the end of the month and all would still be in order. As I left home this morning I noted that my service reminder still showed 7 days before sevice and did not expect the ill treatment I was to receive at the Service Dept. I was advised after getting my 'free' coffee that my plan expired. I showed them my phone call register and stated that I phoned in on 9 Oct 2020 and based on what the lady said I made the booking for the 28th of Oct 2020. Who in their right mind would agree to a different date if the 20th was to be final/ dead stop date. The Supervisor and manager of the Service Dept sofly interrogated me as why would I not have chosen to come earlier and that I should know that 'we deal with this every day'. Almost insinuating that I was being dishonest. I find this unacceptable to have been treated this way. This is my 4th vehicle. I have never been late for a service and do not deseve the manner in which I have been treated. Todya you have lost a client due to your ill treatment. I will never purchase a car from you again. Regards, Kobus de Ru.