********** billing

I purchased telkom data online and paid using my credit card for the data. This month I receive a statement whereby telkom has added the data amount to my billing and debited it from my account. I queried it yest with an agent on chat telkom and no response. This morning I queried it again and suddenly I am told the charge is for a subscription. That is highly impossible as the data is used only for the Internet access and is never put into a cellphone whereby services can be subscribed to. Further this isn't the first data purchase done. I want the additional charge refunded to my account.