Vodacom *****ing money from my bank account.

I am absolutely livid with vodacom vodapay at the moment. I took a R150 voucher advance last month. They have now deducted in twice of my account. While I have been waiting for them to refund me R150 (which can take up to 7 days, considering that they had no problem *****ulently taking it from my account). I got another message this morning from Vodacom stating that I still have not paid the R150 I owe them. *** is going on with Vodacom App. Is it set up to keep *****ing money from my account? Seriously fix your fkn system.