Worst case scenario

Took my ecosport in for service on 8th and was contacted to be informed that my vehicle would have to stay at Barloworld for 3-4 days as a problem was picked up on my engine. The first week I had to Uber from work as no courtesy vehicle was available. I've phoned the service assistant numerous times and only received a call after constantly leaving messages. Received a call on 20th to say that all is being done and that worst case scenario I'll have my vehicle by close of business Monday 22nd. Today is the 23rd and I'm still awaiting my vehicle and since Friday have had no updates or feedback. I don't mind the wait for the vehicle as I know parts had to be ordered and the job needed to be done properly, BUT what utterly displeases me is that I'm getting no feedback/updates, even after leaving messages for the agent to contact me back.