Poor workmanship, bad customer service, poor invoicing

I regret the day I contacted this company as my ISP. When the installer was in my house he did not finish the installation. He complained he didn't have all required material and tools. He left the wires handing on the wall promising to come back and finish the work. Yes, he did come back, except I was at work and did not make an appointment. I couldn't leave work and drive home. I then told him I will call and arrange. The day I called around 10am, he promised he would come until 17h00pm when I asked what time he was coming since it was already late. He told me he was not coming. We got into a heavy argument as I waited the whole day for him. The following day I received an email from technical support the the ticket was closed - job completed. I called again to ask, how do they close the request if someone has not been in my house? The ticket was logged again. Finally another installer came the following day and fixed everything. The latest now from this company: On the 31 August I called to ask my my bill for the month, I was given R695.00, which I asked them to take right away. To my surprise yesterday there was another outstanding invoice. Invoice description says: Accelerit uncapped, R312.97, Reconnection(added 21/08/2022), R93.84 plus VAT R405.97. I called their finance this morning trying to understand the invoice and why it was not taken since the invoice date is 18/08/2022. What is the reconnection fee for? The lady cannot answer. When I sked for the Manager and or CEO, she told me non of them are available- they work from home. Why am I being charged reconnection fee if the disconnection is not my fault in the first place? Why when I called for the balance owing last week, I was not given the total amount outstanding? Why a week later you decide to debit my account without my knowledge? Why are providing such bad service and bad attitude from your technicians and even your office staff?