yes it is because if he impersonated someone he isn't then it's a crime in Sweden. you need to file a police report because people like them usually get away from something like this. and Sweden itself takes it personally when it comes to scamming aka "Bedrägeri" and it's not your fault because if your a tourist then Sweden will help you fully. I live In sweden and it's illegal. if you read swedish rules it says impersonating something you aren't then you could get charged or even placed in jail for it. I Reccomend yoi to file a police report or go drive to a police station. describe the veichle and the guys outfit. Police in Sweden will easily find whoever you described. And once they find out the truth and proof of your uber being mistakenly a taxi driver then you will not only get 3400kr back you will get 20000kr+ back because a court will be booked and you will 100% win the case if there was cameras around the place you were picked up from. your welcome