Xfinity Blocking work VPN

I switched from another service yesterday, everything is fine with my other service.   I am glad I did not cancel it as yet.   I currently work from home and need to use my companies Cisco Anyconnect vpn in order to get onto my companies folders.   WIthout the VPN I can go to any site like amazon, cnn etc etc. etc.   As soon as I log into the VPN I cannot go anywhere, I cannot even see my folders on the other side of the VPN which I need in order to work on.   HELPPPPPPPP or I am going back to my old service no matter how slow they are, at least I can work....