Please provide me with a paid up letter for this account.

Customer Care Case Number : *** I have been waiting for feedback on this case - I need urgent resolution of this case. I paid up this account and closed it in 2021 and to my surprise, I find out when I am declined a home loan that I am owing Cell C. I called and one agent told me that I don't owe anything and another tells me I owe R78. I have now paid R80 into your account and expect resolution of this speedily.