Cartracker Take money from Client’s Accounts

Cartracker took R800 in my account and they are refusing to refund me. On the 29th of September I Paid R800 for changing of cartracker from my old vehicle to my new vehicle, and they went and Debited another R870 from my account. They have confirmed that they received both funds but until this day they haven’t refunded me my money. I phoned their office several times, no one cares to ensure Custormer satisfactory, even the Manager I spoke with who goes by the name of Musa Nyathi, together with her colleagues Ida and Elizabeth, they are all in this, to ensure that I am inconvenienced. Cartracker is not to be trusted, when I requested them to cancel my contract and let me go find another company, they told me that I need to pay R2600. So now I have to stay with them and let them ***** my money wherever it pleases them, and if I no longer want their services, I must pay even more money, I need help!!!!!