Unauthorized airtime deduction

Good morning I'm unhappy with services I'm receiving from telkom mobile. I loaded R140.00 airtime via my banking app on Saturday. And when I checked my balance it was way less than the one I loaded and this was not the first time it happened. When I called telkom yesterday one of your consultants said they will call me back yesterday and return my airtime that was deducted without my knowledge and I don't owe telkom anything and I don't have any subscriptions with telkom. Therefore I want my airtime back as this is my money. And I want to convert it to data now I'm unable to do my work because I don't sufficient funds for the data required for me to continue with my work. I am stuck now. Please resolve this asap