Liquidweb Phone Call Support?

I have a managed dedicated box in Liquidweb for nearly 1 year and never call them by phone. Don't get me wrong, they have very good server and support via ticket so far until recently the server is getting ddos attack and have to be null route an ip address on the server.

I have a ticket about this issue and communicate back and forth however the ddos attack is very strong and the null route have to be continue. After many hours of null route, I decided to request to remove it to see if the ddos attack have been gone. As usual I submit the request through the old ticket but not getting any response after more than 30 minutes. I think the person in charge might be busy so I lift up my phone and call to Liquidweb for reminder of the message in the ticket.

Surprisingly the person who pick up the phone ask for the password of my account or the last 4 digits of my credit card number. I told him that I don't pay by credit card (I used paypal to pay) and he keep asking me my Liquidweb account password for verification purpose. I was stucked there because I don't know whether it is correct step to giveaway my Liquidweb account password? I finally told him that I will open a new ticket to remind them to reply to the message in the old ticket and hang up the phone.

Any Liquidweb customer here who have called them via phone support? Kindly share your experience here. Is the procedure to get account password for verification was one of the correct steps?