Robbing Clients

I've been noticing my airtime disappearing in the last 2 months. I couldn't understand as i was not really making calls. Today i tried calling Vodacom and couldnt get hold of them. The next thing i got a Whatsapp msg from Vodacom customer care ROBOT. Vodacom sent me a deduction list and it shows Vodacom has been deducting R5 everyday from my airtime. I asked to speak to a consultant and received a call but i just got a voice saying please hold, phone rang but still no answer. Very bad customer care and ********* behavior to be deducting money from my airtime.