Help me to go back home for family

I live in London since 11 months, came from Bangladesh and working in a restaurant. Lost job for Corona Virus. Since then my life is very hard to live. Had little savings which i was invested 500 GBP in a broker.Getting some from it every month but have to struggling too.

But my luck is not well enough. Last night i got a call and got a shocking news that my wife had a Road accident and admitted in ICU. Have to make an operation immediately to save her life and cost will be around 2500 pound. From then i can not thinking what should i do. I requested withdraw my whole balance (only 300 GBP left) from the broker. They approved my withdraw but said i will get the balance within 5-10 business day, not possible today or tomorrow. Also i tried my bank to send fund (which i have only 212 GBP) to my family bank account. But as a online bank Monzo, they can not send it to Bangladesh. And blocked my account for several wrong tries.Now they say, they will closed my account and have to take my fund to another UK bank's account but i don't have any. What should i do now.

And i want to go back my home country and stay aside of my wife in this critical situation. But i have not any more balance to effort a economy ticket. So i request all of my friends and family and kind hearted people to help me.

Thanks for giving attention of my post and forgive me for long post, i just want to stated my situation.