Help! Am trying to remove an expired subscription & install a new subscription

I have been trying in vain to remove my expired Norton 360 subscription & install my downloaded new Norton Internet Security subscription since last night. It just stalls when trying to remove and gives an “error” message (unspecified). AND EVERY LINK on the Norton site I try to click for technical support (including but not limited to “Chat with Norton Support” does NOT work - just gives error 400 message. NOT ACCEPTABLE?! And there seems to be no phone number on the web site either. Need help ASAP as I do not want to have my PC’s security compromised. Thanks! (if it helps I have IEP8).