Bad bad service

I called African bank on the 22 Jan 2024 to make a payment arrangment and i was sent to pillar to post .One agent told me the account is sold to DMC and DMC said they dont have the account. I called again to advised what DMC said.The emailed their collections department and they advised the account is no longer with blakes.Called African bank again and was advised the account is sold to nimble .Upon calling nimble they said they dont have the account . Called the today again (African Bank) they sent me to the same place Nimble and spoke to an agent who said there is nothing they can so even the manager said so i should just wait to be contacted. Im trying to make payment to the account but they day there is nothing they can so who is liable then for the debt ? I wajted to pay but no one is willing to assist.