Extremely bad customer service and management!!!

I have had the worst experience at the Vodacom Store @meadowdale in Germiston. I took my S8 Samsung for a screen replacement and had paid for an original LCD screen. After payment was completed and I had collected my phone, only then did I realize that he repaired it not as per the original agreement. The technician (Nitesh Sewpersad) replaced the LCD Screen with a second -hand screen (this was indicated by a black dot on the screen), the colour was incorrect (I asked for black, and a blue was installed) and that I should take a permanent marker and colour in to match the phone. My second incident with this technician was when I enquired about the service of doing a reset on Apple iPads purchased through auction (This was also given at the same time as the above incident). He agreed to have it reset so I can use them, however when I checked the iPads after payment, I noticed that it was not done correctly, and I still could not access the iPads as I needed. Please note that all this was done via Vodacom and the technician who acted on behalf of Vodacom. After which I took it back for them to correct this. I have requested invoices for all these jobs numerously and still did not receive anything even after providing them with all the details they required. Lastly, I was met with an absolutely arrogant and unprofessional MANAGER from Vodacom named Archie Naidoo, he came to my workplace and advised in a very rude manner that if I did not pick up my iPads which was in his store “he will chuck it in the bin”. As a paying customer I do not think any person is allowed to behave in this manner or threaten a customer that needed a job to be completed of which payment was done. I do hope that Vodacom head office will not treat this lightly, as this could happen to another customer and will tarnish the banner completely due to the *********** staff they hire.