Unfair Blacklisting

I paid a cancelation fee for my contract with vodacom in October 2022, but it was only canceled in November 2023. After canceling my contract, they blacklisted me, as a result I cannot get credit anywhere else. When I went to the shop where I took the contract, I was referred to Vodacom head office in Midrand to see vodacom legal department, but on my arrival at the head office, I was only allowed to see a sales consultant, when I insisted on seeing a legal representative, they sent bouncers to kick me out of the building. They say their lawyers are unaccessible while they are in the same building. And I never missed any payments, I gave them all the proof and they can also see in their system