Customer complaint

I'm completely disappointed by the service I have received from MVIA Insure I have a service insurance with them since last year I was clear on the call with them that my car is due for 45000 km and by that time it was on 43000km that's when they said I must make sure I take the car for service before it reaches 45000km or if it does they are giving me 1000km if it exceeds then they will not pay. I booked my car for service on the 28th 45950km and the service provider contacted me informing me that MVIA says they will not pay the full amount because I'm late and I have to pay 50% of the amount charged. When I called the they said there is nothing they can do I asked to be transferred to the customer service and the person who I spoke to refused said there is no need for that then I cut the call. On the 28th around 2pm the service provider called me and informs me that they haven't received payment from MVIA I followed up with them they said they received an invoice late from the service provider they specified on the email that the invoice must be sent by 1:30pm when I called the service provider the lady sent the email at 14:00 so she was late with 30min that caused me to not get my car same day the following day on the 29th the service provider sends them an email at 11am no response I called MVIA no answer only got through at 13:55 when I ask what's the hold up now they payments are done from 3pm - 4pm now it's the second day with no car and I had already paid my 50% to the dealership. What a bad service I have received this is totally unacceptable I will not continue with MVIA anymore I'm done.