The tax service paid special attention to immigrants for the day childcare support system because immigrants in average commit more fraud (1) on other areas. This was understandable, not meant to be racist but very wrong and illegal. Also they just clawed the money back and you have to proof that you were innocent and they did not look at the evidence. Tax service uses outdated computer systems which are not connected to local system. Politicians promised to solve it and never did (still not).

(1) Many commit fraud by accident because of language issues and complicated rules. Also there are a lot of traveling immigrants who make mis-use of the Dutch welfare state by applying child credits or unemployment benefits while abroad.