Vodacom contract

I was in arreas with my account so they decided to hand me over to Hammond Pole fine, I made my payment arrangements with them and started paying. 5 months down the line I receive a text from other attorneys saying that Hammond pole handed me over to them and I asked why because I've been paying, I contacted Hammond pole and they said they can't track my account on their system. Then the next month I was contact by MBD attorneys and I told them straight that I'm not going to pay because I was almost done with paying at Hammond Pole so until I receive back the money I paid them there is no other attorney I'm going to pay. Now I'm being contact by alliance services and I keep on telling those agents the same thing. I honestly have a serious problem with Vodacom and why are they giving my personal details to so many people, I mean what happened to keeping a clients details confidential? Next month again I'll be contacted by another company, I don't have a problem with paying off that account but I want my money back from Hammond Pole then you must give me the correct attorneys I should pay so that this account can be cleared.