No Access to Service Bookings and then wait Two Weeks for a service opening

I called twice on Monday, 30th April to try and secure a service booking. On both occasions, I was advised that the bookings agent (Nomsa) was busy and that they would all me back. I called back today, on Wednesday 2nd May and was advised that the soonest I could book my vehicle in for was Monday the 14th of May. I find it really hard to accept that I need to wait so long for someone to call me back firstly. Secondly, it is unacceptable that I have to then wait for 2 weeks to make a service booking. Incredible. Ridiculous. Unacceptable.