Sorry, I have been a bit busy. No, the store wasn't much help. I did find out from other users on a dutch site for reviews and prices that they had the same problem with the 1/60 sec.
In the mean time I made other pictures but not in the sportsmode anymore and they are better with a higher shuttertime. That sadly means that the sportsmode is useless what i don't understand because sony advertise greatly over this mode. Even do I desided to keep this camera because (as another store has said) the other camera's wouldnt do better.
I hope that I can enjoy everybody soon with great pictures!!