beimg pished from pillar to post

dear standard bank<br> <br> I went pe branch at newton park to settle my loan as it was not decreasing instead it was increasing I have paid it all now on the 15 july 2015 then I asked this lady to give me form to sign to close the account she then told me that cant be done as I just paid thou it is reflecting on their system I proceeded asking me to formulate a letter telling me that I have paid my loan and then again she refused and advise me to wait she will cancel it tomorrow and then I can be given the letter till now can you assist me with the letter and a verification that the account has been closed