I will NEVER ever deal with your stupid organisation, EVER!

I had a car for a short time and ended up with a unit from this useless company installed, no matter how many times I tried to make contact when I was selling the car mid last month, they failed to assist until I contacted the office of their CEO and someone called, we could not finalise everything at the time and she promised to come back to me the very next day, needless to say that never happened. I then reversed their debit order and now they are able to call, sms, whatsapp and even email me daily for a stupid 99 rand. I am not going to pay that for May month as you failed to call me back as promised so we can agree on the amount I still owe and how we were going to handle that.