*****ing airtime

I have been a satisfied pay-as-you-go Vodacom subscriber for more than 15 years. That was until Jan 2018. Since 2 Jan 2018, about R250 of my airtime has been ****** because of alleged 'subscriptions' to - SPOT4FUN, Christmas Music Service which I have never subscribed to. I complained and Vodacom unsubscribed me from 12 Jan 2018. I then recharged with R12 airtime on 12 Jan. By 13 Jan all airtime gone despite making no phone calls, nor smses. Phoned and complained again on 13 Jan - was told 'didn't the operator tell you that it takes 3 days to take effect?' 'No she didn't.' On 13 Jan operator confirmed that I was not subscribed to any subscription service. She also suggested that I make sure that I wasn't subscribed to any service on Fun and Rewards. I did this, it confirmed that I wasn't. On 17 Jan I recharged with R12. By 18 Jan only 86cents left after sending just one sms. Tried to phone 082 111 - was told that call centre very busy and recorded message suggested that I try alternative means. I spent 20 minutes on the Voadcom website and nowhere is there an e-mail address where you can send a simple complaint. (Note - during this time I have either used wi-fi or have used the data credit in my phone so the airtime has not been used for data.) I'm considering leaving Vodacom and moving to another network if I do not receive a satisfactory answer and if the problem is not resolved.