Contact support because of feeders / propably hacked accounts?

Normally i would not contact support because of this. Most of the time i dont even report "feeding", because everyone can have a bad day. But in my last game i had 2 in my team who didnt even try, they ran straight at the enemy team. In addition, im suspect that the accounts might have been hacked, since then seem to play decent, according to their history. What to do?
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