Britney Spears left bosses of a radio station baffled by refusing to answer any questions during an interview.

The Toxic hitmaker appeared on KRBE's The Roula + Ryan Show on Monday (07Oct13) but the hosts declined to air the five-minute segment because Spears failed to answer direct questions.

Details of why the singer was so uncooperative during the incident at the radio station, based in Houston, Texas, are not clear, but insiders suggest she took offence at her questioner's colourful language.

A source tells GossipCop.com, "It's unfortunate that one station used profanity while telling her a long story, which was completely disrespectful."