Account Closure Immediately (SAD AND ANGRY MOOD)

Bad services ever on the companies in South Africa, as was settled my contract with them 2020/12/15 but still too-date as appearing as outstanding payments on ITC and was given settlement amount by them and were informed Vodacom after payment went through that account has been settled and were advised by their staff member that it will take 21 days to updates on ITC before i make payment, I went to several branches to complaints and queries were logged and nothing has been resolved , need to apply other facilities I am blocked by them and as not fair cause i settled their account its been 9 months and 2 weeks account settled no letter they can issued as was advised by their staff members that shows account is closed