Vodacom handed me over to MBD then when I was almost done paying MBD they decide to take me off MBD. They don’t even call or email to explain anything they just wanna increase my interest coz they see I’m almost done with paying off

My account was handed over to MBD I didn’t have a problem I been paying although I was struggling at first, then I decided to take up a debit order when I got a permanent job it’s been going on until December 2017 MBD didn’t take any money so in January I decided to pay the money into their account and I called them just to find out how much I’m owing in total and what happened with the debit order they told me Vodacom took my account back I must arrange payments with Vodacom, but Vodacom didn’t contact me to say so and I’m not owing much anymore. Why would they take my account back and not say anything about it. I don’t even know how much I owe and I don’t understand why they took back my account.