tried to log in, said i didn't have an account

tried to log in, wouldn't accept credentials, called support, they said there was no record of my account, even though i have bank statements proving i have been paying $16/month for almost a year, and have been actively using that account, with recorded meetings, which are now gone. Representative made me create a new account. when i try to change the meeting ID to my phone number, it won't let me as it says the # is associated with another account. but supposedly that account doesn't exist? please help. I have all of my business contacts and information and connections through that account and meeting ID.