Kicked-off the comp game

just few min. back approx. 5pm 50min (UTC+1) I was in the middle of a comp game. Then the ping raised to 300+ and I was kicked-off the comp-game without any connectivity issue at my end. The result was -50SR + 10min suspension.
This should not happen and is unfair!
Please check your log files and get back to me with a resolution to this issue.

I have seen this Post (Overwatch Technical Issues, SR Loss, and Leaver Penalties) however in my case it was not possible to rejoin even after less than 30 sec.

The reason you can’t rejoin doesn’t matter, the penalties are final, as mentioned in the thread you linked.

Rejoining a game is only possible during certain phases of the game. If you leave a game either during the pre-game or during the first minute of the game, the game will automatically cancel (remember the 10 second rule does not apply to the leaver, but as a warning to other players that the match will cancel). You can rejoin the match during the initial hero selection screen if you are lucky enough to quickly reconnect though.

Otherwise, you can only rejoin any-time after one-minute of match time has passed up until the match completes. However you only have two minutes to do so without penalty. If you rejoin a match after two-minutes, you will still automatically be marked with a loss an be penalized with a -50 SR cut and a ten-minute suspension. This rule ensures that no one can abusive the leaver system by attempting to return to a match after deliberately leaving in order to avoid such penalties. Furthermore leaving three or more times in a single match will result in an automatic penalty. If you fail to return to a match by the time it ends normally (regardless of match result) you will be penalized.

And exactly the goes my concerns.

I haven’t left on own choice or on network issue.
I was kicked-off the match after we successfully hold the first point (defense) and we were close to capture the first on attack.
I wasn’t allowed to rejoin the match, even after less than 30 sec. after getting dropped.

I agree to the rules, but here is something wrong!