Unhappy costomer

Hi my name is Lungile Maseko, I lost my phone on the 16 June 2020, I block the phone then I called my insurance to put a claim, then my insurance which is Telkom insurance ( finrite) told me that my policy lapsed and instructed me to call Telkom accounts to check if my account was up to date and if it's up to date I must request a leeter stating that I am up to date, which I did on the 24 June 2020 I spoke to a lady called Sindi khuzwayo which she said she will said an email to the credit department and also told me that the process takes up to 10 days, since that day till to date I haven't received any response from the credit department, iv been calling almost every day and speaking to different consultants from Telkom all of them telling me that the will escalate the matter till today I haven't received it. Worse part is I use my phone to perform my work duties and if I lose my job the very same Telkom will be calling me everyday to get their money. Can I be assisted as I'm really tired of calling Telkom even thinking of canceling this contract. They have debited my account but they fail to provide me with a simple letter which only takes 2 minutes just to draft the letter. My alternative number it's ***