It's a rather big negative balance, -55 €.
That would be too much fees.
Also, why they are dividing deposits, if it was a single one? And then charge double fee? This is very strange to me and I have the feeling that I will wait for answer for couple of weeks.
The dividing of deposits into random increments happens because the bitcoins are traded on their linked exchange in real time when you deposit the coins. It's not Mistertango which buys your coins and converts them to EUR fiat. The event depends on those buyers offering to buy a certain volume of coins:
http://btc-exchange.com/Some buyers will offer to buy, for example, just a certain amount of bitcoins which might fall below the amount you deposited. Mistertango trades the coins at the exchange's best rate. If that rate is filled, the next best rate is used until your deposited coins are completely traded. This explains why the EUR amounts are deposited in separate deposit transactions.
The fees are really bad news but I try to ignore it and focus on the convenience of real time conversion of my bitcoin to fiat which I can then SEPA-transfer to my other IBAN accounts in Europe.