Vulla Collections Service is pathetic

I was handed over by the doctor when I thought I had finished paying off my account, needless to on the 8th of March I called their office number provided on sms and there was no answer, then sent them a watsapp to contact me regarding the outstanding amount but nothing.

I called my doctor and they requested POP's which I sent, after 3 weeks vula Collectors call me and I explained that I sent the POP's to thee doctor since they did not respond. On Monday I sent another email copied my doctor telling them I'll be taking it up with Hello Peter and still nothing. The doctor responded and said he will follow-up wiithh them I made payment as per the sms I got and today I receive a response saying I owe them more than R600, firstly they are *********** and liers because they included email fees when they only sent an email once

I would like to ask companies to stop using their service as it's disgusting and they will loose clients, they don't bother to return calls and make up fees