+1Collapse chat or block chat from that player. Not that hard.
Just ignore them. Block chat block chat bubbles block image. Report them if you want, reporting would result in them either getting a warning from Pokerstars or being banned from chat for a period
I see this cancer comment quite a bit and not only on freerolls I have been told this and similar pertaining to my dog, mother, father on $7 and $15 spin n gos.
Just plain disrespectful and foul mouthed players. In my view Pokerstars should ban them from playing. Unfortunately the max punishment is being banned from chat.