Earpods Refund/Repair/Replacement

I bought earpods in Birmingham Apple Store 11 days ago and my earpods’ microphone/volume control button’s part is broken already. I did not put any physical power on it, half of the button just fell off. It still functions properly but it doesn’t look right and there are significantly higher possibilities to be broken in the close future since it’s exposed. Would it be able to get a refund or replacement? If I can, where can I be able to? I’m currently not in UK and wouldn’t be able to go to Birmingham. Thank you.