Should’ve stayed with Cartrack!!!

Worst experience ever. First of all the unit was installed while I had insisted I had paid with Cartrack already & was covered for the month so they should come fit the unit day before my current service expires. They told me it didn’t matter, I wouldn’t pay, I would only pay on my selected debit date which is the 15th. The guy didn’t even tell me what the additional thing on my keyring was, and how to use it. No tutorial, no details about downloading the app and getting a tutorial video on there, nothing! Had to figure everything out for myself. Now I’m being harassed for a pro-rata when I had insisted I had already paid for this service with another service provider. I stressed not wanting to pay for a service I had already paid for and was assured I wouldn’t pay, now why the pro-rata all of a sudden? They should’ve informed me about this when they were selling their service, now I must make two payments?. Secondly, there’s no response when I press the panic button, no call whatsoever to check if all is well and this was just me testing it. What happens in the even where I’m under real panic? It’ll be as if nothing is happening.