i lost rp in the most annoying way

I don't know why this keeps happening. At the start of certain games, I experience uncontrollable lag, which is frustrating because if I leave and join another game, everything works perfectly fine. Basically, the game had just started when I began lagging uncontrollably. A few seconds later, I was kicked back to the home screen with a message saying I was out of sync with the server. I rejoined, only to find that I had been penalised for leaving the match when it wasn't even my fault. I've now lost hard-earned RP. Gold 3 is already hell at the moment, and I'm trying to earn as much RP as possible, only for the game to do this to me. I expect to have my lost points refunded, as this has never happened to me before.

Annoyingly i didn't get a screenshot I quickly went back into the game to see if they kicked me out of the match