I think I know who you re talking about.

Met 3silvers in same server a week ago, 2of them dc at the beginning of the game
I talked about this with my friend later, she gave me videos she recorded and I attached the link in my reports

Then I met them again right after I submitted the report
That game was 16kills vs 17kills, both silver healer running and jumping around

Reported again and said if they won't take this seriously I'll post this on forum with character names
Never saw them again anyway don't know if they got banned