Hello, can I help you with something?
I'm having this crazy frustrating issue with your site. Every time I add something to my order, the shopping cart doesn't update. Can you help?
Yes.  Have you tried logging in and out yet?
Yeah, first thing I tried!
Refresh the page and try to add it again, please.
Well dang, refreshing fixed it! Thanks a lot for that.
That's great!  Is there anything else I can help you with?
Nah, all good!
Have a great day!