Yahoo Technical Support Number

I have Norton 360 on my laptop. When I try to access yahoomail.com website it says it has been blocked. Now I have no idea if this is with the website or has my Anti Virus blocked it. But if I try a different browser it works. Just in the google chrome it is not working. I called the above number for Yahoo. They asked me to get in touch with you guys. Will appreciate your help.

[Edit: Removed phone number]