MBD - NO TRANSPARENCY AND ACCOUNTABILITY!

I owed VA R3936. I asked to settle the account in 3 months. Did not receive a statement when I jad paid up in December. Instead, I was charged R481 more in January. When I ask MBD after numerous calls saying they don't know, they then say its VA. I call VA, they say they cancelled and handed over the account so there should be no additional charge. What was I being charged for in Jan? No agent can say and are hesitant to say if this was interest or a fee. They just don't know. MBD did confirm that the account was paid in full in December. So I shouldn't have been charged. I'm now sent from pillar to post. Ingrid Peters doesn't answer calls. There's not a single payment statement I've received or paid up letter. Why is there no transparency and accountability?