How to Block a tranfer?

Hi, I accidentally just instructed a bank transfer to the incorrect person. How can I cancel this?
I live in UK and the bank transfer is to an Italian account in EURO. I tried contacting support, but nobody is picking my request and no reply from them, help!

Hi @sburtt,

As I can see an agent has helped you with your query.

Please don’t hesitate to contact us if you have any further questions.

Have a great day.

Regards,

Andreas K.