Wage neverending story

20 euros were stolen from me by my previous employer.

It was like that: I came to get my money for working 2 weeks (1 full week + 1 additional day) at my previous employer. As I counted earlier on my own, I should get 184 euros (46 hours overall). They told me that 20 minutes or less over one hour doesn't count - so still, I should get 180.

Salvu, the co-owner, told me I'm getting 160. I said it's not right - I should get 20 euros more. He said "then leave the hours you worked and we'll check with the punchcards". I agreed and waited for the money. He started counting and... gave me 400 euros. I said to him: "Salvu, what's wrong?"; he answered: "oh don't bother me, just bring the hours tomorrow and they will be checked!". I said "it's not that" and started counting the money in front of his eyes. I took a 100 note and six 10s, I showed him the rest (a file of 20 and 10 notes) and said "what is this about?". He looked at me in astonishement and he said: "wow, you're a real gentleman". Later I agreed to call him the next day and get to know about the missing 20 euros.

I was calling and "stalking" him in the restaurant for more that one week. He kept dismissing me, because "he's busy", "his wife took the punchcards", "he went to buy some fruit", "he's off today" etc. Finally yesterday his daughter answered the phone and she said "he's not here, call tomorrow". I said: "I'm not going to call him tomorrow, I'm going to go there and talk to him. I don't have money nor time to call him everyday, so I'm not going to fuck with him anymore and I'm coming tomorrow." She replied: "I'll arrange it for tomorrow".

Finally, today I stalked him the last time and he greeted me by saying:

"I think you have to pay even more".
"Pardon?"
"You have to pay the taxes, so it's even more than 20 euros."
"So you mean you pay taxes for me?".
"We have to hide your wage somehow. So we payed taxes for it differently. If they knew you were working here, we would both have problems"
"Well ok" - I said with an ironic smile. - "Maybe you should've told me this earlier?"
"What?"
"I was said I'm going to get paid 4 euros per hour. If you said it will be less, I wouldn't get annoyed and nor would you".
"Maybe you have some point here. But really, I can do nothing about it."

So apparently I have been robbed by my employer. I can do nothing about it either. I don't have a contract, I don't have the punchcards, nor any evidence I should get paid 4eur/h. If I went to the police, we both would have problems. So it's best to just shut up and curse inside...