Help & Favor!!

How are you? I really need a favor from you.

I need to get an iTunes gift card for my Niece, Its her birthday but i can't do this now because I'm currently traveling. Can you get it from any store around you? I'll pay back as soon as i am back. I promised to do anything for her. I've been trying to get it online but i don't know what's wrong with my card.

Kindly let me know if you can handle this.