Horrific Service

I phoned the company pn Monday 15 June to install a change over switch for my new generator. Willem informed me that he will get someone to contact me and confirm a time. Long story short, this never happened and I phoned Willem again on Wednesday 17 June, since the 16th was a public holiday. He then informed me that they are fully booked? I thought they guarantee same day service? Willem informed me that someone will be at my house at 08:00 Thursday morning. Noboby pitched or phoned. I phoned Willem and told him that I'm not satisfied with the service I received. Willem asked me whether I would rather like to make use of someone else. To which I rep****, well if you show customers away that easy then yes it's maybe better. Willem responded well F..k Off then... My word, I was absolutely dumbstruck...