Double Debiting Account

Cartrack has been double debiting my account and I'm so ****ed because ever since I changed my package it's been a nightmare, I want my refund back and I want to cancel their services because it's so inconvenient for me. They send a WhatsApp message stating they could not debit my account yet there was money in my account. I made the EFT payment but the following day the debited my account again.SUTE