This company actually steal money from me (870 eur...

This company actually steal money from me (870 euro) , they make a bill without explanation and in 7 months i did noy get any official document where from that dept come (same time I always had pay in time all 2 years while i rent apartment by them) In the end I just can do nothing and should pay. So be careful that worst way of corruption I ever see in my life, still in shock it's possible in Netherlands.