DISGUSTING SERVICE FROM A MANAGER

Its been weeks since I emailed Sharnie o brien who was suppose to give me a detailed recon statement and to date I still have not received anything also I asked who authorised Telkom to give my banking details to a 3rd party to make debits on my account.So I asked for proof of this in my contract as I did not recall signing my contract where it states that sensitive information such as my bank details can be given out and she responded they can do what is necessary to get their money back.As per the NCR any actions that are taken by a company that company must notify me of this in writing to which I have 21 business days to respond this has never been done.For somebody that is a Manager in a department and not respond to emails is very disgusting and from this should I not get relevant responses I will take this to social media and resort to naming and shaming people its a wonder Telkom is doing so bad in the market