Unhappy client

I joined ADT in June and I was told that I need to pay R3500 in three months then I will be debited R385 monthly I paid R1500 IN JUNE R1000 in July and R1000 in August I called the sales person and informed him that I have been debited and he said I can reverse the payment I received a sms telling me that I am in arrears I sent proof of payment to Nomandla and called ADT requesting them to tell Nomandla to call me because I called her number several times w and no response today I received a text that R385 was returned and threatened that my services will be terminated