are bookies fortunejack.com & rollbit.com  trustworthy with larger amounts ?

somebody can confirm betting on this 2 bookies with over 10k , 50k ? and no issues with withdrawls
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The answers will always different from their experiences , some may confirm but others will not give a damn because it is your money and you must be responsible to where you will be depositing and betting that amount.
But 10k - 50k  for single bet? there are even million dollars amount of bet though I cannot confirm on those 2 because I am not their player but in other sites such as sportsbet and other site has this larger amounts.

try their site with small amount first mate, try to become at least their VIP for more comfortable and safer deposit and playing .
for me personally? it takes time and partnership before I will finally deposit huge amount such that.