Credit clear I want my money back

The lady called me her is Xoliswa . She told me they help to clean up credit profile.i told the lady m not black listed or under Dept review and my accounts are up to date . The only problem I have is my credit score is going up. She told me maybe they are some accounts that paid up but I had some late payments or was once on areas. They can remove them from my profile and clean up any fault they find. For any R1798 ones off payment. I paid they money. A week late they called me an they said if want them help me I'll have to pay . The money I paid was a joining fee. How can I get my money back? Asked them to pay me back but they say they don't do repayment s. My name is P.S Mcunu cell number ********** 888