The best advice here is post number 11 above.
Leave a review, not girl in pictures and you immediately left.
You may have been randomly mugged or some thug may know that guys are in the area, carrying money to visit escorts. May have been disturbed before getting the €100.It may have nothing to do with the escort.
Tipping off police may cause trouble for others in the area.
Be careful, the escorts you choose to visit and the area you go to, especially late at night.
Any threats to the escort or anyone associated with them could end in you being reported to police.
Chalk it down to experience, consider you got off reasonably lightly, move on and avoid that area if possible in future.
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Shalom/salaam.
10,000 years of Middle Eastern civilisation and the place is not at peace but rather in pieces.