I’ve lived in London for over 35 years. It’s common parlance. That kebab shop was a mugging. You were mugged in the apple store. Etc etc.

Honestly it seems those dictionaries are not at all up to date with common English informal phrases. Source: native and resident Londoner of >40 years, and user of "mugging" in the "ripped off" sense for most of them.

> Your use very fringe at best and is very inappropriate anywhere else

New Yorker here. Perfectly fine usage there. “The cab driver robbed me” is our local variant.

"Robbed" is not the same as "mugged." You are correct that "robbed" does have a colloquial definition.

>informal overcharge (someone) for something.

Dictionaries lag behind the language. They do not define the language. [1] Metaphorically, the dictionary is a slightly out of date road map, it doesn't define the road network. When the poster tells you of a new road, he isn't "wrong" just because it doesn't show up on your old map.

[1] http://www.maximumfun.org/adam-ruins-everything/adam-ruins-e...

You might find this interesting: https://english.stackexchange.com/questions/20477/what-exact...

If you overpayed you were mugged. Very normal term here in the UK.