Event Billing usage charge that I do not know anything about

In May 2022 I opened an LTE data package contract with Telkom and my 1st statement (May/June) showed an "event billing subscription" amount of R100 and I thought its maybe activation fees etc. The second month this subscription increased to R150 over and above my expected LTE debit amount. I went to the Pavillion Telkom store, in Durban, to enquire about this and I was told I may have subscribed to something that they cannot tell me. I asked them what is this subscription because there is not even a reference number/name in the statement about this subscription. I told them this is impossible I would not have subscribed to anything. I was told an 012 number would call me and a few minutes later a call from *** came through but nothing was said and this lasted only 6 seconds. I tried to call back this number but was unavailable.

I want this subscription deactivated and be refunded my money (R250) otherwise I will escalate this complaint to ICASA because this is ***** what Telkom is doing.

My account number is ***.