No ethics from Ithuba manager and Installer

We a small family business based in Pinetown Durban. We had to close due renovations and Ithuba had to keep the machines in storage. Last week we getting ready to open and contacted our rep for her to make the arrangements. She came in and the owner signed the documents to confirm everything. Last week Friday just before 5pm an installer came to install but we had already left. The store owner next door who was also setting up called us and said there's someone here to install. After a conversation he agreed to leave the machines there and come on Monday to install. Come Saturday morning we receive a call from the installer saying that he is here to install we explained that we agreed on Monday and that we only open at 9am. He then tells us that Checkers opens at 8am so he expected us to be open at 8am without phoning to confirm. He then states that because of us he has lost 3hours. He had no ethics. He was rude and didn't know how to speak to a customer. We then had contact with a manager of the Pinetown area. She was just as bad. She defended this installer tooth and nail. She sided with him making it seem like it was all our fault and he was right. No bad language or insults was used but the manager says she's receiving abuse from the store owner. She had no intentions to solve the issue or even try to solve the issue. It was very weird how a manager would side with an employee without even listening to the customer. She then basically says we will get sorted out whenever there is time. This was truly shocking service. This is obviously victimisation. We unfortunately don't have the installers name but do have the footage of times . We have called head office and want answers. This is posted on behalf of the owner which they both spoke to.