I was advised by a friend that there is a group of lawyers that assist to pay the account and I am going to pay them

I was advised by a friend that there is a group of lawyers that assist to pay the account and I am going to pay them. I contacted them and make an agreement that I am to pay less money that I was paying of R2000.00 for my accounts and they are going to deduct R500 for 3 years, it was 2011, in 2017 I decided to cancel it because the Total amount that they deducted was R28500.00 , and the never paid my account. This company was for Xolani George of Midnight Star Trading, no3 1st Floor Lucky's Building, Terminus Street, East London. Now he is owning Excellent Security , the email address is Info@ excellentsecurity.co.za the contact number is 0315632437. The address is 120 4th Street Parkmore Sandton, 2196. I want my money back because I've been phoned by the creditors, I am black listed