Contract Line Suspended with no solution put forward

I recently updgraded my contract with Vodacom June/July 2019 - ***. Since the beginning of this month my line has been suspended eventhough my account is up to date. Everytime i call in about this issue an agent tells me there's a "credit limit issue" on my account which is caused by system technicalities and that there's nothing they can do about it. They unblock it temporarily (12 - 24 hrs) and then the following day the account is suspended again. This has been going on since the beginning of this month with no clear guide on how to resolve this. At this point I'm extremely disappointed with Vodacom's service as I'm paying close to R1000 a month for a phone I cannot make calls on or do anything for that matter. This is the last resort before i cancel my account with them if the issue is not resolved with a refund for the period the account has been suspended.