Vodacom customer service is *****

Vodacom Customer Services very unprofessional,when they cannot deal with the matter they're dropping the phone,i have been waiting for my paid up letter and my account to be updated for the past 3 months,calling them each and every time for more than 10 times asking for update,all they say is issue has been escalated after that they go Awol,everytime i call we start the process from the scratch,today they tell me there is amount I need to pay before getting the letter.

Well I paid,now they're telling me they have escalated the matter..I will receive my letter in 7 working days,but all along they have been saying they sent me the letter