MVIA Insure service / the lack thereof!!

I took my vehicle in for service today after I had received go ahead from them last week. I was literally the first person to arrive at the service center today and an email was sent to them for authorisation at 8h30. At 14h30 the service center told me that they hadn’t received anything yet and asked me to perhaps call MVIA to ask what the issue is. After waiting for 1h20 to speak to a consultant, I still didn’t receive any positive feedback and the authorisation wasn’t sent to the service center. Subsequently; my vehicle had to stay overnight in hope that they will authorise the service first thing tomorrow morning.