An armed robber who demanded a Playstation 3 at gunpoint agreed to settle for an XBox 360 when staff told him they didn't stock the computer game console.
The hooded robber swiped more than £500 of goods - including the XBox, a handful of games and £60 from the till - when he raided the Blockbuster DVD and game rental shop in High Street, Thornton Heath.
Two female members of staff were on duty when the man walked into the shop at 7pm on April 14, pulled a black handgun from his waistband and demanded money from the till.
After they handed over the cash he then demanded a Playstation 3 console - worth £400. When he was told they didn't have one he asked for an XBox 360 instead. He then grabbed a handful of Xbox 360 games before walking out of the store.
Neither victim was injured but it has been claimed that police did not arrive for 20 minutes because they were sent to the wrong Blockbuster store.
Police have described the suspect as a 6ft black man, aged around 25 years, of medium build who wore black, baggy trousers, a black hooded top - with the hood over a baseball cap - and a jacket which had dark blue sleeves and a green body.
Anyone with information should contact the flying squad at Tower Bridge on 020 7232 6530 or Crimestoppers, free and anonymously, on 0800 555 111.
A Metropolitan Police spokesman said: "I can confirm that, due to a mix-up with the address, there was a 20-minute delay in officers arriving at the premises."