Bamboozled with bad service and unfair (immediate)payment requested - Comtech Satellite Installation

On 23 March 2023 I had a problem with a 'no signal' message on Openview. In the process of trying to solve the matter via telephonic technical support, I spoke to someone who immediately said, he sends out a technician. Three guys pitch up around 90 min after my call - 19h25, already dark, with load shedding soon (20h00). They started working on the roof, inside the house, etc. I continuously asked what the problem is - as I am living on a limited budget, I should plan for any maintenance. My questions were answered with ' we are working on it' and 'we are busy with the cables'. I couldn't follow their conversations as I didn't understand their language. After (estimated) 25 minutes Gift said they are done. I got an invoice of R5170 and was asked for immediate transfer. I questioned this and said I don't have that money - the guy said I should read what they did, on the invoice, which were......... call out = R499 OpenView optical eye = R1650 23 m Cable @ R46/m = R1058 (I stay in a small townhouse) Installation fee = R1500 Vat was calculated @ 10% (???) Total on invoice R5170 (Indicating a 24-month guarantee???). I got the impression they won't leave until I've paid (around 10 min before Loadshedding and alone with a disabled child) The problem is still not solved. Several calls, emails and WhatsApp's to Brian @ ***, promises were made to attend to the matter - without success!