Does not deliver or complete service

Had a problem with my Garage Door, phoned Tanyas Garage Door Services and a technician came out to acess the door. A quote was given which I accepted. Turns out the technician could not finish the work as he did not have the right parts. Melissa demanded I pay them the full price before the technician leaves. The parts they fitted cost about R140.00. I declined that and paid them a deposit of R1000.00. A second invoice was send now for a reduced amount which were not accepted. Melissa then send me threatning WA’s trying to intimidate me. This company operates under other names as well. The invoice was from Garagedoor Repairs 24/7 and the technician had Extreme Garage Door branding on his vechile. So, I am now left with a Garagedoor that is still not working. Very bad service from this company! Do not use!