I would give the blue cross a miss but thats because of personal experiance.
My daughter had to have her nose cauterised and because she got in such a state they had to put her under general anesthetic to do it, everything was ok until we were handed the bill which was 348EUR. Mum and Guy had to go to the bank to get more money out for me as they would not take my card. I counted the money out three times to the lady and know it was correct as i was left with 10EUR to go to the chemist and get the cream that Mia needed for her nose.
Within 5 mins of leaving the clinic the lady i gave the money to called me to say it was 100EUR short and i know damn well it wasnt as i had counted oit out in front of her, she to had counted it and stamped and signed the invoice. I said she had made a mistake...she said she would check again and call me back. She called me back again and said it was still 100EUR short, i told her again that she had made a mistake and she put the phone down on me...this was 2 months ago and havent heard anything else so i feel that the woman was trying to rip me off....i am not silly with money and know how much i had given her...i checked my purse and called my mum twice to make sure she hadnt given me 100EUR less than i thought...but i also counted the money out 3 times