Thanks for all the suggestions guys. The transaction has now been confirmed on the blockchain & I am past the point of no return. I never though I would fall victim to a phishing scam as I'm usually pretty good at spotting these things. Unfortunately it was late & I was tired otherwise I may have spotted it. Therein lies a lesson.   

I've just fallen victim to a phishing scam & sent 1.5 BTC to a fake website. I believe as the transaction is unconfirmed in the mem pool there may be a limited time I can claw it back by sending the same coin again with a higher transaction fee. My initial amount was sent with a low fee which is why it perhaps is unconfirmed after a long time.
 
I do need some technician help to try this as I have no idea how to do it. Transaction was sent via Wasabi Wallet.
 
Do you know of a person who can help & guide me what to do? I might have a shot.
 
Obviously a big reward to anyone who could help me claw back this transaction.
 
Andy Wonder.