car service

I bought an i20 Hyundai last year December and was under service plan until 60000km, in January 2015 the dealership booked in my car for 45000km service with Hyundai at wonderboom Pretoria and everything went well. A month ago my car was due for 60000km service I then called the dealership to assist me with the booking of the service but unfortunately this time around things did not go well as before, I was told that the service plan has expired during the month of August and neither Autopedgree nor Hyundai has informed me about that. I then visited the dealership again this afternoon just as I've been doing for the past weeks and I did not receive any assistance regarding this matter instead I was told that I'm irresponsible.