Complain

My name is Trudy Ramatlo, I purchased a Mazda vehicle in May 2018 and have been sending the vehicle to services on time. In June 2021 I called them to book for a car but unfortunately I became sick and couldn’t take the vehicle in for service. Yesterday the 21st of July 2021 I called them to book the car for service as the kilometres were 44 000 not yet 45 000and they gave me today’s date which is the 22nd of July 2021 and I even received a confirmation message for the service that it has been booked. This morning I took the car in and left it there. on my way home I received a call from them saying that the service plan has been expired because it’s more than a year even though the car hasn’t reached the 45000 km. my main concern is that why did they send me the message reminding me to take the car for service before it expires?? And when I called them why didn’t they check on the system and advise me immediately??? Why didn’t they inform me on time??? Why are they illuminating the information???Now they’re are telling me that I must pay R2500, I didn’t budget for that and where am I going to get that cash like now??? I am really not happy with all this. I asked the lady who called me (Dominic) to ask her manager to call me and she said she will let the manager know but I have been waiting for the manager to call me, he hasn’t called me even now. This Dominic was so rude she didn’t even want listen to my side of the story neither interested to assist me. If this is how Mazda treats their clients, then they are going to lose more clients including me