Very bad service and communication

We have booked in a gearbox for repairs at the Bellville branch - Riaan Kirchner. Yesterday when we went to follow up, we were told the gearbox was finished about 4 weeks ago, but according to Mark, the computer that needs to print the invoice is out of order. How is that possible? Mark will have Riaan's cell nr, please contact him regarding this problem. - Is it out of order for 4 weeks? Why could nobody phone to let us know? This is not the kind of service I accepted... If social media is the only option to get a positive response, I will do that