Help support

I cannot get any live help or customer support. This is not customer or user friendly> All I want to do is add additional users to my account and the system tells me they are don't have an account, however the person has an account and set up a meeting with me to prove it. I have a meeting in 6 hours and can't get help. This is ridiculous. Can someone HELP? The automated phone system is trash too! it just loops and then hangs up.