GINN City & Lounge Hotel Ravensburg

I was there from 26th of April; in my initial booking I said one adult, one child of 15 years; a day before arrival I was asked for an online check in, and when requested to key in the birth date of my daughter, it was not possible to select the year 2006; it was late, so I just took a year randomly (2016). At arrival the staff - a Greek gentleman - told me that I should pay 80 EUR more, since my daughter was 15 and not 5; being late after a rainy day, I just paid the 80 plus 60 EUR for next morning breakfast (15 EUR each) and went to bed. In the morning I went to the reception, shown my booking were it was written "15 years old"; lady at the reception said they will check and revert. Later on same day she said that it was a system error and the 80 EUR paid for nothing I may use for breakfast in the coming days. Same evening I met again the Greek gentleman, he said "yeah, it was a system error, but still you have to pay for your breakfast, because the cost is now 19 EUR per person, not 15 ... Since I could not trust the man, next morning asked three times at reception what is the breakfast cost, I was told three times: 15. At checkout they told me I had an open balance of 72 EUR that I had to pay. Being in a rush (flight to catch) I paid and checked the invoice when back home; breakfast cost was now 19 EUR per person.... Overall, the hotel looks fine but I felt myself robed. And it looks they don't know how to recognize their mistakes.