Appalling and ************ Service/ Prac

Company Partners quoted me for a service which amounted to R1660.00 and I was promised a turn-around time of 5 working days for the service, 21 days later after countless phone calls and emails to them asking about the status of the service provision, which at this time had seen me lose out on business opportunities which re**** on this service being provided by Company Partners as promised, I was told that Deanne whom was handling my account was preparing another quote for what they termed "Backlog", this quote was requesting an additional R 5900.00 for them to sort out this so-called backlog in order to proceed with the initial service I had already paid for. I then indicated to Reyhanah Martheze who is the business consultant I am dealing with that I could not afford the additional amount and questioned why this amount did not form part of their initial quote to enable me to make an informed decision on whether I was in a position to proceed? Subsequent to that I requested a refund from the company and Reyhanah Martheze said,I could not get a refund which baffles me because the service I ordered was not delivered due to this backlog they spoke of....Therefore how am I not getting a refund on money paid for a service which was not delivered? Furthermore Reyhanah proceeded to state that they would keep the money in case I needed another service from them (they would credit me)...here is the thing, after such a poor service level and failure to prioritise my case and the fact that I have already lost business because I thought I was dealing with ethical professionals on, I wish not to continue doing business with the company and just want my money back. I have yet to receive a response to an email I have sent to Reyhanah, requesting the deposit, which she said she would take up with her manager.