Telkom complain

I am so disappointed with Telkom. On the 25th of April 2018 I bought data bundles that amounted to 2G. I wasn't credited with that data so I called my bank since I used internet banking to but that bundles. I was informed that the funds were no longer in my account so I should contact my network provider. I've been calling Telkom and emailing my statements for proof bust with no help. They don't call me for feedback and every time I call them for feedback I'm told that my case is closed.