Tired of struggling with Tracker!!!

In 2013 tracker phoned my husband about a tracking device to put in the car, my husband told the person that he can't put it in then for we were going to buy a new car that December and it was only 3 months away. So the tracker guy told my husband it is no problem that they can put the tracker in and after 3 months they can move the device to the new car for R150. When we bought the new car we went to tracker bloemfontein so they could put the device in the new car. There they informed us that we have to pay over R800 to that after they told us 3 months before only R150! So we told them we are not intrested in tracker any more for they did not keep their word. The lady at the office told us to wait she will find out what's going on with the price difference after sitting there for hours she came and informed us that we must pay the R800 + for there was a price increased so we told them to stop the tracker we don't want it anymore and they can go take there device back and after almost 2 years and a lot of phone calls we are still struggling to get them to stop the debit orders and give us our money back which they debited now for almost 2 years!!