Money debited

Good day,I have been a loyal customer of tracker connect and in the past few days it has been nothing but a problem. I received a message saying that the device doesn't show any movement meaning it doesn't have signal,then I called them to inform,mind you I'm using my airtime on all the contact made. The technician came and installed a new device...3days later I received a message saying that the device is functioning optimally and by then there's a weird sound at the front in the engine since the 1st technician ...I called again,to my surprise the other technician was booked and Patrick confirmed that there won't be any extra charges...then I received the message saying I have to pay R595 which I dont know of...I called them again and spoke to *****bo and told her that I want to speak to one of the superiors which didn't happen...she just told me that it was an error that was made of the payment and it won't be deducted... today when I had to run errands then bomb ? money debited from my account. I want my money as in like yesterday and from today I want then to remove this because now I'm fed up... they must remove it and not disconnect.