Notice period when you are outside of coverage

After experiencing months of intermittent LTE coverage, we were finally told a week ago that we no longer fall into the coverage area and that we would have to cancel our account and go with a new service provider. I called again the same day, spoke to a different technician and received the same information. We were told that we would not be held to the calendar month notice period as this is out of our control. Today, my husband the account holder, called to cancel and now we're told that we are still within coverage and that a calendar month will apply after a 3 to 5 day wait for a cancellation confirmation. This is unacceptable. We have taken on a new provider and cannot be expected to pay for notice periods for a service we are unable to use. Line speeds average about 0.3MBPS when they are even running.