Baseplay Max *****ing our money with Vodacom's conscent

My son's Vodacom account has been debited with "Purchased Contect 2" since mid August. When querying we found it was a service called "Baseplay Max". We found a spammy SMS that says congratulations you have subscribed for a one day free trial, thereafter R15 per day. At the date and time of the so-called subscription my son was nowhere near his phone.