Telkom paid up letter

You know it is very sad when you work with service and you know your rights as a client but yet you get the poorest service ever . I have been very patient with Telkom they are honestly disrespecting me now. I settled my account on the 20th of December 2019 but I am still struggling to get my paid up letter they tell me different stories every day. They told me to wait 72 hours/48 hours/ 14 days still I haven't got my paid up letter. The last call I made yesterday (04/02/2020) The lady said I will get it in 24 hours time but still... My reference number is ***3. They always escalating always! This is draining and hurting me a lot because I can't get any credit at the moment because of them. The account is settled why is it so difficult for them to send my paid up letter??