Friends Club - fraud

Visited club on the 19th of July,2019. Paid €30 for 3 drinks and to my surprise my drinks were grabbed by stranger or by bartender himself in order to charge me again. I approached security guy to explain myself and ask for help,
like check cctv. Security guy could not be bothered and refused to help at all. When I asked to prove staff names who served me, they refused to provide those and were rude to me. Be vigilant at that place and if there is an option do not go there. Finally, quite a lot of people at club were below 18 and non of the serving staff speaks Latvian or any English.