Poor service and lack of communication

I'm not happy with their service, last week Tuesday and Wednesday I called them to join them so they can put the tracker on my vehicle. Thursday this lady called me and said I must accept the payment arrangements so they can come and install. Friday this other lady called to arrange for fittings but I was at work couldn't take the call for long and I told here to call me at this specific time I mentioned on her but she never got back to me. This week Monday around 11am I guess I missed their calls as I was at work but after 2:30 pm they got hold of me and we arranged that they will come after 4pm if not they will call and arrange for the next day morning of which is yesterday "Tuesday". I waited for their call no one called so yesterday morning I decided to call and check on them what's going on they kept on transferring me from this consultant to the other and this other consultant told me they have no technicians available allocated on my area, the other one **** that they called me but couldn't reach me and the other one said they will get back to me before 12pm of yesterday till now I'm still waiting for the call. Around 4pm I tried to call the numbers they were using to call me and they were not going through. So imagine if they don't have technicians to install what if something bad happens will they be able to trace my vehicle and I'm angry because on Monday afternoon I had to cancel what I was supposed to do for them. I so disappointed with their service even I haven't joined them because if they can't help me they should just say it then I'll look for alternatives.