WONT RELEASE OUR LINE, AND OWN COMPANY SAYS THEY CANT GET HOLD THEIR CANCELLATION DEPARTMENT

I honestly don't even know where to start, this is the MOST *********** MOST frustrating experience we have ever had to deal with in our entire life. We cancelled with them beginning of December 2021 (that took a month to get right). We want to move to a new ISP, they switch us off Monday so today is day 4 with no internet all they have to do is hand the line over to our new ISP/migration!!! Yet they are even unable to do that, 1 hour on phone calls numerous messages sent, emails to every single person we could think of at ****sonic and not a single reply. They say mail cancellations, are you kidding???? we have mailed for 2 months, then they say its reactivated, NOTHING is reactivated we cancelled the Service. We want to be free from you so WHY will you hold us hostage????? you also debited our account on Monday so you have zero right to keep us with no internet and to not migrate us to our new provider, and WORST PART YOU TELL US YOU CANT GET HOLD OF YOUR CANCELLATION DEPARTMENT????