Is there a person I can call?
Ecommerce Answer
Got an 800 number? Post it in the header! Post it all your phone numbers on the contact us page. Post the times you are available to answer the phone. Put that 800 number next to a pic of someone talking on the phone, preferably a real employee. Let them know that you have a physical location in a specific count.
Got a brick and mortar store – put up a picture! That online site that had the BBB image with no link also had a picture of a building in Alpharetta, Georgia. The address was pasted onto the image. Looked legit but I’ve never seen the address on the image.
So put your address in the text because you aren’t afraid of being googled and have your address pop up on your website.
I googled the address from that iffy website and was able to pretty much verify that those folks didn’t have an office in that building, by the way.
Got live chat? Make it obvious but don’t rely on that to make your customers feel better. Too easy for the visitor to end up chatting with someone in Asia that way; it’s better to be able to call a US or your country number and get a human on the phone quickly – without the call forwarding on a couple of times. (Remember that the next time you forward your customer service number to your cell while you are out and about.)
Do everything you can to make your customer feel comfortable – then they’ll buy from you – no matter if you have a one page checkout or not!
Zen Cart Answer/addendum
Your cart comes with a tagline for the header – take advantage of that built-in feature to display that 800 number.
Use that contact page, you can edit it nicely in admin > tools >define page >define_contact. Put the info in text!