How are you trying to access your VPS? Are you getting any errors? You should be able to access your VPS using SSH to the Public IP of your VPS. what happens when you ping the IP Assigned to your VPS? Try rebooting the server from the Web Control panel and after a few minutes try and login.
I know the VPS plans were going to be adding Console access but since I am using cloud servers now not able to check if VPS has the option. If you have the console option in the control panel can you login to VPS through the console?