London, September 6 Employees at PC World and Currys used Facebook to abuse their customers.

Many past and present staff members hurled abuses to their customers on discussion boards.

Some of the offensive comments go: "a***hole customers!", "really stupid customers!" and "some customers are really really stupid".

Other posters read customers deserved a punch, reports the News of the World.

One even asked if they should use a cattle prod on them, while another boasted of having sex with a woman customer after he found her on MySpace using details from a sale.

A lot of people from the group's 3,000 members have put their real names under remarks.

The stores' parent company, DSGi, is reportedly investigating the matter. (ANI)