Helpless staff

have a Vodacom account which I am or was currently paying through MBD, of which I decided to settle last week Thursday. I requested a paid up letter and I was told to wait 14 days until I could receive such a letter. I understand and had no problem with it. I then called in again just to find out whether I could get a letter with the company letterhead in the interim just stating that I have paid up my account as I wait for the paid up letter. I have been calling and sending whatsapp messages (073 *** 8956) with the promise of being sent such a letter, as I urgently need it for a rental application. Till this hour I am still waiting for the letter as I was promised by a gentleman I am currently speaking to on WhatsApp who has now stopped responding my messages, and is no longer taking my calls.

Can I please just have a letter stating that my account is up to date, and has been paid in full, as I wait for the paid up letter.