According to the the rule, they are correct. However I would agree with you that it was not a sportmanship behaviour. I recommend you to play with other players, for example me :)
(dölj) Om du vill hålsa på någon på deras eget språk, prova då Spelarnas Ordlexikon, vid länken "mer om språk" under flaggorna. (pauloaguia) (Visa alla tips)