No help from Customer Service

I receive an sms every Thursday notifying me \Your recurring R7.00 subscription to AirG Social Service will be billed on date.... To unsubscribe click [URL Removed] :) Not knowing what this was about, or where it was from, I copied the link to my webbrowser on my PC, and it crashed my entire computer. I have phoned Autopage numerous times to ask and assist me to stop this sms and deduction from my account, to no avail. During the last call I was told that it's my fault because I keep going over my internet limit. Nobody seems to really know what this sms entails. The last reference number I received was #***. When you dial Autopage's customer care number ***you go straight through to accounts. When you ask to be transferred to customer care, your call gets cut off. I've tried to get through for the last 2 weeks, more than 11 times."