Telkom data depleted in less than 24hrs and no explanation given by the MNO

I had a very bad experience with Telkom and their team. I logged a ticket (query) regarding my data that depleted in less than 24 hrs and all the information was shared with them including (SMSes, screenshot of data usage). The call was first logged on the 29/04/20 and my last email to the Telkom team was on the 19/05/20. I gave up following up because the Telkom team who are cc'ed on the mail are no longer responding to my query and I am left with only this recourse as they are not responding to emails anymore regarding the issue I raised with them. The Telkom team is very poor in terms of customer service, they are not ready to be customer facing because they are unable to assist customers with their queries. My data has not been compensated, no explanation of why and how my data (11GB of all network) just disappeared.