Bad Service from Outsurance Service Provider

I have a claim with outsurance that has been taken care of very well from the day of the claim until the claim was finalized. A service provider was appointed (Imbazo Trading), I immediately called the contracted to make an appointment for the repairs. They did not know about the claim, they told me that they will call me back once they have confirmed with Outsurance. Two days went by without any phone call from the service provider, I then called outsurance trying to find out what's happening. Sthembele Ngcobo assisted with the matter, I then got a call from the service provider telling me that they will send their guys out. I also asked them if their guys will be able to finish the job given the time they sent them out. The guys had started removing the rubble and that's all they did and only managed to buy two pillars and two precast slabs. When the service provider call I was clear about my availability to them, I got a call today (19/11/2021) from them telling me they were at the gate, whereas I had informed them that I will be at work and only available weekend and Thursday. They also told me that this job cannot be done during the weekend as they cannot source material, so I have to wait until next week Thursday with an open wall. They were clear that it will not be on Saturday.