Worst Service ever

Worst service ever, I app**** on Friday, they told me the technician is only available on Monday, which I understood and yes he came on Monday and did the installation, I was told that the unit will take about 24 hours to update on the app, I understood even then.. but after 24 hours my vehicle was showing as though it is in Joburg and I am in Durban, so I called and the person I spoke to said that within an hour or 2 everything will be sorted, I trusted only to check after 4 hours that my vehicle was still showing as though it is in Joburg, I requested a call back from the website they told me I have to wait 24 hours for a call back (which I found unreasonable and unacceptable) I waited and when I call back Today they saying they going to send the technician tomorrow, that I cannot accept, this whole process has been a nightmare and I would like to cancel cause even the guys from product keep hanging up on me. this is stupid.