Tue Nov 14, 2017 1:31 pm
I'm talking theoretically here. I never did it myself.
Your transaction is unconfirmed. Which means, that Bitcoins didn't leave your address/wallet yet. So it could be possible to double spend it. Basically you will create a new address/new wallet. And from old wallet (with unconfirmed transaction) you will send all your money into a new address/new wallet. But this time you will choose higher fee. Which means, that this new transaction should be processed immediately (within 3 hours). And your old unconfirmed transaction will most likely never be processed anyway. If in the future fees drop very low, your old transaction could be processed. But in that case there would be no more BTC available on old address. So transaction would be cancelled anyway.
Once again, I never did it myself. Try to google something like "bitcoin double spend" or "bitcoin cancel transaction". To confirm my theory.
If this approach doesn't work, you could try to contact some miner at some miners forum. Offer them money to process specifically your transaction.