Unhappy and disgruntled client that has a home loan

We requested a settlement amount on our home loan . we called Absa home loans and they advised us settlemet amount is R449290.57, we then went to a branch in Festival mall and they gave us the same amount. We came home and paid R449290.57. now we get an email stating that we still need to pay over R2000, which is the interest. Why do you think we asked for a settlement amount, Not a happy chappy at the moment. Not gonna pay this amount interest needs to be reversed. So tired of institutions doing people in. My husband took his pension money to settle the home loan now this is what we get. we settled the credit cars too suppose the amount is also wrong. Absa you need to train your people no wonder every one is closing there account and going to other banks. Need this sorted out as i will also go to the Ombudsman. unhappy client.