Rod Stewart conned his way out of massive hotel phone bills by convincing staff they must have made a mistake.

The football-mad rocker used to call home and listen to big Scotland games on TV when he was on the road, racking up hotel charges that he would then dispute.

In an appearance in a new documentary about Scottish soccer star Denis Law, Stewart recalled one phone bill he was handed as he checked out of a U.S. hotel in late 1973.

"To get to the 1974 World Cup in Germany, we had to beat Czechoslovakia," he recalled.

"This was another game I didn’t see, because I was working with the Faces, but I remember it like it was yesterday... I used to phone up, and my dad would put the phone by the television and I would listen for the whole game," he went on, adding: "Then they would send me a bill for hundreds of quid (pounds)."

"I would say, 'What person in his right mind would be on a phone call for 90-odd minutes?' and they would say, 'Oh, yes, I suppose it is a mistake, Mr. Stewart', and I would get a bill for 10 quid," the 75-year-old recollected.

Stewart was the Scottish team's good luck charm in 1973 - they beat Czechoslovakia and made it to the 1974 World Cup, but despite only giving up a goal in the first round in a 1-1 draw with Yugoslavia, they didn't move on.