777 Casino - Closed my account after withdrawal request of £30221.89

UNRESOLVED
coldeyes616 United Kingdom
posted on May 19, 2016.

After winning over £30k at 777 Casino, primarily on the Victorious slot, I verified my account and requested withdrawal.
Next day my account is verified and the withdrawal amount of £30221.89 was awaiting processing. This site employs a 3 day wait for withdrawals which although is a long time to wait I had no problems with this. However on the third day I received an email stating the money had been returned to my bank roll and my account blocked. I received a further email stating that "This is the Operations Team at 777 and we are contacting you with regards to your account with username "coldeyes616".

As this account is related to other accounts that have been closed across our network, we have temporarily suspended your membership".
I do not understand this as I do not have an account with 777.com other than this one and my account was fully verified.
I have included a screen shot of my bankroll which I am unable to even use/withdraw from to prove the amount of winnings.
I am very confused as my account was fully verified and only when it came to payout was my account blocked. I have even sent more documents in the hope my account is unblocked, passport, bank statement. I had previously sent driving licence, marriage certificate and picture of my visa card.

AskGamblers
posted on May 24, 2016.

Dear @coldeyes616,

Please let us know if there's some update on your issue.

coldeyes616 United Kingdom
posted on May 24, 2016.

Hi there, not really so much of an update unfortunately however they did reply to an email I sent them five days later. They stated I had opened an account previously with different names under their enterprise of cassava? Which turns out is part of 888 casino etc. This is untrue and I was not aware 777 casino was part of 888 casino. Seems like an excuse to just close my account because I turned the freeplay £21 into over £30k. So yeah, no real update they're just refusing to give me my funds under the excuse I have multiple accounts which I do not.
Looks like on this occasion I am just going to have to forget about the amount I made :( and hope there are other casinos out there that are more trustworthy as I noticed another complaint about them on here which was also unresolved and the casino wiggling their way out of paying.