14 DAYS TRIAL - DEBITING ACCOUNTS!!!???? EXPLAIN?

I am absolutely disappointed in the service of SHOWMAX. They offer a 14 day trial and WITHOUT ANY NOTIFICATION debits your ACCOUNT. I do not want to keep the subscription, as I need to focus on studies and showmax just debited my account for ONE MONTH. This is UNACCEPTABLE. You CANNOT ADVERTISE 14 DAYS FREE TRIAL and DEBIT PEOPLE'S ACCOUNT WITHOUT NOTIFYING THEM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PATHETIC SERVICE & ADVERTISING.

PLEASE CAN SOMEONE RESPOND TO THIS URGENTLY?