Just to be sure I understand, they have refused to wire a portion of your own legitimate savings to a third party of your choice? Period?
So:
1) If you owed me $7,500 and wanted to repay me by wire, would that be ok?
2) If I, living in another country, choose to convert my $7,500 into some clothing, a mountain bicycle, vintage wine and some BTC, that is presumably outside the jurisdiction of any Israeli business?
3) If I later choose to donate some BTC from my bank to your electronic wallet, surely that is also outside the responsibility of a competing Israeli bank?
If my premises above are correct, I can only suggest you move your savings to a different bank.
Yes, this is pretty much it, as absurd as that sounds.
Fortunately I personally have another bank account in Israel, which has allowed me to send money to Mt. Gox recently. But - in any case, I am actively working on getting myself an account with a foreign bank.
I have just filed a claim to the "supervisor on banks"
(המפקח על הבנקים) to understand what's the general regulatory situation. Will post updates as I get them.