After raising concerns about my deposits showing a descriptor* of the actual company Webops Ltd (a company I have never heard of, let alone purchased anything from), I challenged Velobet Casino and after a lot of email exchanges they agreed to refund me all my deposits amounting to over £580 - have received all monies!
*‘Descriptors are intended to help the cardholder identify the products or services purchased’.
If the cardholder doesn't easily understand the billing descriptor and recognise the transaction, a chargeback can be initiated.