Nedbank service.....DISGUSTING

I am having big issues with Nedbank, I have wasted almost R300 airtime in the space of a few hours. I was helped by a consultant yesterday who confirmed an account was paid in full, he promised to send me the settled in full letter but hasnt. In the mean time the legal dept is hounding me saying I owe over 30k. How can one dept say the account is paid up but the other says I owe. The legal.dept is making me do all the leg work and is not helping me. How can a company so big not have systems that talk to each other. I want the call recording and now no one call give that to me, even though it's my legal right to get it