This thing about how you contact players might be something the leadership of the national football team should consider, in times of phone scams.
But Nygren, 23, felt anything but deceived when he heard that he was talking to the national team captain Jon Dahl Tomasson.
Awesome. The national team is something I've had as a goal for a very long time. I became extremely happy, says Nygren.
A planned trip to Stockholm had to be cancelled. Of course, the trip from Kastrup to Malaga and the national team gathering in Marbella was more appealing.
Left Sweden early
The striker was a few years ago one of Swedish football's hottest teenagers. He was only 17 years old when he left IFK Göteborg for Genk in Belgium. But it's only recently – and now in Nordsjälland in the Danish league – that his foreign career has taken off.
When Hugo Larsson declined, Jon Dahl Tomasson called in Nygren, whom the national team captain had been keeping an eye on.
I've delivered at a high level continuously for the past year and a half. I've felt that I might have taken myself closer and closer.
It's very cool to get that confirmation, says Nygren.
Brings forward players
Jon Dahl Tomasson's stance is clear. For those who are good enough, the door to the national team is always open. There's no guarantee for playing time, but looking at the results under "JDT's" first year, the Dane is happy to bring forward the players he selects.
Benjamin Nygren, Besfort Zeneli, and the suddenly called-up Melker Widell are the players in the current squad waiting for their national team debuts.
Maybe they'll come in the coming days. The national team starts the playing year with a national team match away against Luxembourg on Saturday. On Tuesday, Northern Ireland awaits at Strawberry arena in Solna.
Jon Dahl Tomasson brought forward eight national team debutants during his first year as national team captain.
Defenders:
Daniel Svensson, against Estonia in Tallinn
Alex Douglas, against Azerbaijan in Baku
Nils Zätterström, against Azerbaijan in Solna
Midfielders:
Hugo Bolin, against Estonia in Solna
Simon Olsson, against Portugal in Guimaraes
Niclas Eliasson, against Denmark in Copenhagen
Williot Swedberg, against Serbia in Solna
Forwards:
Isac Lidberg, against Azerbaijan in Solna
In addition, these players debuted in competitive matches, in the Nations League:
Goalkeeper Viktor Johansson, midfielders Yasin Ayari, Lucas Bergvall, Sebastian Nanasi, and Anton Salétros, as well as forward Gustaf Nilsson.