how time changed

time in my last game started at 2 minutes and turned in to five for me and my opened should have lost that game but got more time

I don`t like these rules

It's not the "rules". Your opponent isn't getting more time. Did you consider maybe looking in the FAQ or in the several hundread other posts about this topic before you posted?

You can read about what is happening in your game here: http://support.chess.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=678

Your last game was a 2 | 12 game. The first number means that you will start with 2 minutes, and the second number means you get 12 seconds added before every move. If you don't want to get time added to your clocks, look for games like 2|0 or 5|0 anything with 0 in the second number.