I did not receive my "Triple Triple" Badge

https://imgur.com/KBPCDXp I did not receive my "Triple Triple" Badge. I just finished a game as Lifeline and I am 100% sure that I killed 3 enemies from the same squad 3 times. The kills were only displayed after I killed the last one. She is becoming my favorite character and I want my Badge. I am not good enough to do it again easily so please, help me.