The exit route is chosen by the entrance you used
Withdrawals in regulated gambling generally follow a principle borrowed wholesale from financial crime prevention: money returns along the path it travelled in, up to the amount that travelled in that way, before anything is paid anywhere else. It is not a courtesy and it is not configurable. Its purpose is to make an account useless as a laundering device — if funds can only go back to the instrument that supplied them, an account cannot be used to convert money from one form into another. Nearly every payout complication that is not about identity is a consequence of this rule meeting an ordinary fact of life: cards expire, banks close, wallets are abandoned, and people deposit through several methods over years without ever thinking about how the money would come back.
The rule, and the four ways life breaks it
The principle is simple. The friction comes entirely from the gap between a tidy rule and a messy payment history, and every one of these situations is solvable with documents rather than argument.
Source first, remainder afterwards
Deposits are usually repaid to the instruments that made them, in some defined order, and only what is left over can be directed elsewhere. Splitting a single payout across several destinations is normal, not an error.
An expired card is a documents problem
Where the original instrument no longer exists, the usual route is proof that it was yours and proof that it is gone. That is slower than a working card and it is not a refusal, though it is often heard as one.
Bank transfer is the fallback, not the default
When source routes are exhausted, a transfer to an account in your own name is the standard remainder path. It carries its own verification, which is why it appears late rather than first.
Some instruments only work inwards
Products that cannot prove who owns them can sometimes fund an account and can rarely receive from one. Discovering which of your methods are one-directional is much better done before there is a balance waiting.
Straight answers
Why is my payout being split across several destinations?
Because the return-to-source rule is being applied literally. If you deposited through three instruments, the first tranche of any withdrawal typically retraces those three routes in proportion or in order, and only the surplus goes to a single chosen destination. It looks fragmented and slightly alarming; it is the rule working exactly as designed, and each fragment should be traceable in your transaction list.
What if the bank behind my old card has closed entirely?
Then the sensible move is to say so early and in writing, with whatever documentation the closure produced — a closing statement, correspondence, anything dated. Operators deal with this routinely. What causes delay is discovering it halfway through a review, because at that point a straightforward administrative fact arrives looking like an attempt to redirect funds.
Do these rules come from the operator or from somewhere else?
The shape of them comes from anti-money-laundering obligations and from payment scheme rules, which is why they look broadly similar across operators licensed in Great Britain rather than varying with brand. The details — order of repayment, which instruments are supported in each direction, what evidence satisfies a closed-account claim — are the operator's own, and those are the parts to read in the terms rather than assume from another site.