In England, or specifically London? Good old fashioned courtesies like that seem to be dying out now. You're more likely to go to a counter here and be grunted at by a 20-something who is simultaneously on her mobile phone or buffing her nails! ( meow).
I've never heard anyone say; "Thanks for your custom" ever, however in my jewellers which is owned by Americans I do have to thank the customer for choosing Ernest Jones at some point during the transaction otherwise I get marked down during a mystery shop, which can lead to dismissal.
I also have to find out their names, their close friends' name, and the name of their childhood pet*.
*(Not quite, but it feels that way. So not worth £7.30 an hour...)
I first heard the phrase as a child while watching Are You Being Served? (Yes, explains much about me)
Looked it up then, and saw it was a traditional departing phrase given, but more often on cards than verbally. It stuck in my mind as a eureka moment for why people are called customers.
A good job Lord Walsingham is no longer about. There's been a few people on line recently that would be getting a visit for a 'pep' talk!
The Moving Finger writes; and, having writ. Moves on: nor all thy Piety nor Wit. Shall lure it back to cancal half a line, Nor all thy Tears wash out a Word of it.
I avoided it - she was always so clearly the product of her grotesque upbringing. The upper classes produce this kind of emotional dysfunctionality quite frequently.
Wow! And, I mean wowWoWWOW! Congratulations to England! You put Fox (is that spelled Faux?) News out of business in your country. I just read that they pulled the plug on it in England. Damn, that is so fine! I would say it's impressive but, really, it's kinda the opposite. Any country that has a viable audience for Faux News has a screw loose, such as the U.S. But, still. Too cool!!!