Issued an uncashable check

I claimed a bonus to deposit, I got through the playthrough. My withdrawable balance was $500.00. I requested, a 500$ bitcoin payout. The message that pops up when I requested the withdrawal said, Thanks, please allow us 7-10 business days to approve this transaction. ( I thought that was a little lengthy, especially a bitcoin withdrawal, other casinos can do that immediately) Ok, so... I wait. 10 full business days, finally I get a email... saying, were sorry, unfortunately we can not give you a bitcoin withdrawal because our casino policy requires you to have made a bitcoin deposit, atleast once if you want a bitcoin withdrawal. ( now, I'm thinking, well? why did no body bother to tell me that, during the 10 days I was waiting....) anyway. They proceed to say, you may only receive your withdrawal via check. so... I reply to them, I do not have a checking account. we go back and forth. The rep. with captain Jack insists that, if I have a credit card, such as the master card I used to make the deposit on their casino, then, that means I have a bank account. and I tried and tried to tell him. it is a pre pay card. he would not listen to what I was telling him. I relented to them, ok, send me a check. so.... then I get another email saying, Thanks, for requesting a withdrawal via check, it will take another 7 to 10 business days to verify your information, bla bla bla. So... I finally get the check a full 25 days from the original withdrawal request. I open the fedex envelope, ando the check is not for 500$, it is for 295.01. and The worst part is... The check is written on a account and a bank in Canada, Bank of Montreal. !!! I am thinking, o great Ill never get my money. I go to the western union check cashing store in Thomaston GA where I live. They look at the check and say, this check only has a 7 digit routing number... No U.S. bank is ever going to be able to cash this for you. They call the bank. in Canada. The bank tells her, No, That account number is invalid. I email the casino, of course I am very upset at this point. Then the casino rep. reminds me to be respectful. I disconnected the live chat with them. I have contacted the casino support email. The email even says, it will take 5 to 7 days for a reply. They did reply sooner, tho... and continue to assure me. The check is uncashable, that was there own words, they say, the check must be deposited into a checking account. and then you can get access to the money that way. I even went and opened a checking account. It was an online bank, and to deposit a check you must scan the check front and back and upload the image, well.... as you can imagine, the computer declines the transaction each time. I am totally out of options. I do not want to tear this check up. but, I probably will end up not getting my money. I just wanted a bitcoin withdrawal. and Captain Jack has several other sister casinos, that they belong to... And These casinos, I HAVE made a bitcoin deposit on. It seems to me, they could transfer my funds to silver oak casino, or,,, royal ace casino, so that I may be able to get my bitcoin withdrawal. Please help me, not let them get away with this! It is not right!