Vodacom Woes

When will my Vodacom account be fixed? I lodged a few complaints about missing airtime and data, after cancelling a contract within 7 days of commencement. I have called them numerous amounts of times and even had a gentleman call us back full of promises that all would be sorted out by 1 July 2020. When we checked again this morning, there's still missing airtime from the end of May 2020 that was never credited. I would call them back but it's very frustrating to be on hold for more than 1 hour at a time. Please, please please help....