What About The Cheaters?

Hello, 

I just had a very bad experience where the person was playing at a table with his/hers other two accounts, so practically I was playing with one and the same person with three accounts. I reported them, but they just continued to play normaly. When I told them that it is obvious that he/she cheats, practically I was told to quit if I don't like it. 

I very much dislike that there is no any consequence for people like that. 

The person with 3 accounts is called Linda S. other 2 accounts are those with "G#".