Paid up letter Vodacom

Hi there Please note that I am so cross because i trying to get a paid up letter for my account from last week 23/07/2019 till today and every time i phone they have a different story. We got a letter from vodacom on e mail on the 13/06/2019 telling me i ow them money on account I*** and need to settle it. They only give me seven days to pay the account. I have settle the account on the 24/06/2019. I also ask them to send me a copy of the contract. They could not help me in any way. I went to vodacom myself to sort out the matter with no luck and no help from no one. From the 23/07/2019 i was phoning like 10 times a day for the settlement letter. Phillemon told me anytime it will show up on my e mails but nothing. The other people like Dolly , Dorothy and I can mentioned a few more call center people told me in the same day or 24 hours. We already standing on 5 working days and no letter. They are quick to know what your e mail is when owing money but when they need to send you something you need it takes them weeks or months. Please I need this letter asap. Business needs to go on and I need the pay up letter.