Extremely poor service

I am recieving extremely bad service from my sportscene accounts department. They do not adhere to any collections law and operate without any rules. They do no check payment statements and do not care if payment arrangements are made. I called them recently to make payment arrangements and specifically noted them not to contact me regarding this subject during that time. They have disregarded my request and I have spoken to them about 4 times where they add a amount of R22.00 to my account for every call. I called them to make arrangements for payment for the 14th of march and the account has been paid on this date, they called me for the 5th time this morning on the 15th of march. They have added a amount of R22.00 for evey phonecall and email. After every phonecall they are spitefull and send me a sms that ads R3. They are incompitent and calling them to complain falls on deaf ears. They are regulated by the act and are not adhering to it.