Showmax

Showmax keeps on supmit my debit order twice (and sometimes even more) a month and their excuse is that I have two email accounts. I have cancelled one of the subscriptions but then I have no service at all. Then I supscribe again. I beleived it was a new subscription and will be debitted only once. But then this month it happened again. I am not young anymore and can not afford it. I don't know what to do now. Must I go without the service and cut MORE down on my living standard?