Frustrated customer

Since I have joined cartrack I have had issues,the consultants firstly when you call in puts the calls down in your ear,you have to call multiple times to get to speak to someone.I sent an email to management three months ago and to date have not received any feedback from them as they never available to speak to you.i scheduled an upgrade three weeks ago they took the money already then when I called they said payment must be done before they can upgrade which is not the truth,then my 8am appointment booked for the upgrade they advised that the technician cancelled the job,then I was again put back in the queue someone else put me through to a technician and advised he was outside my gate but he was at an incorrect address.