Urgent Assistance Required for Incorrect Billing

I am reaching out regarding an issue with Vodacom Business. Seven of our data contracts were mistakenly migrated to higher tiers. Before an additional migration to an even higher tier could occur, I intervened and contacted Vodacom to prevent it.

While the contracts have been reverted to the correct tiers, Vodacom is now refusing to issue a credit for the months we were incorrectly billed.

I have called approximately four times regarding this matter, and each time I am assured that someone will call me back to assist, but this has not happened.

Could someone please contact me urgently so we can resolve this issue?