As soon as they saw I was labelled as a value bettor and my stakes are limited to a few cents max, they knew I would not be of any use for them anymore.
But if you are limited by the game provider, and everyone is saying that BC Game and 500 Casino are using the same game provider, how was your bet accepted at 500 Casino? Were you limited after you placed and won your bet on BC Game? What's your status on 500 Casino now, are you heavily limited there as well? You also mentioned being limited on Stake as well.
I am guessing that sportsbooks and betting providers cooperate in cases where it's in their interest to keep winning and/or cheating players away from their platforms. That could explain the quick limit you got on BC Game perhaps.