Poor Billing and no explanation given

Telkom has a contract with me of which they provide to me midnight surfer data 12am - 7am and normal day to day data to use from 7am - 12am. they billed the day time data after 12am and within the 7am night surfer time and then i called in to let them know what had happened and all they did was fail to supply me with my data back telling me that i had used up the data in the daytime when i wasn't even using the service at the time but the ****le was still active and no device being connected. they fail to show the transactions for the day telling me that technical will provide me with the necessary breakdown and this was 3 weeks back and i am still waiting on it and talked to 3 managers in total being Kamogelo Kwai, Phutumani Buthelezi and the last one by the Surname Folo of which i forgot to take his name. consultants that helped me are Zane Chequentom, Akhona Metsi and the 3rd one gave me a false name which the manage by Folo failed to track down. Now i am here waiting on feedback for 3weeks being promised that I will be called on the same day being a week back and now I have no other way to get feedback as i tried emailing the Telkom escalation service and got zero feedback