Veronika Zvereva

Hello! I wonder if anyone can advise me on what I can do. I moved to Australia in October last year. I've recently received an email that I am due a tax refund and should wait for a cheque. The cheque had already been sent out when I updated my address. I tried calling but got redirected several times after being cut off. The new tenants at the place we used to rent sent me the photo of the cheque, and it doesn't appear it can be used online, I also hear the fees can be astronomical for overseas cash-out. As I am not physically present in the UK, what is the best thing to do? I appreciate your help! Thank you and have a lovely day, Veronika.