What should I do if I ask for a refund again if I sell my cell phone secondhand through a personal transaction?

I sold my cell phone second-hand through a personal transaction.

They want to get a refund again because the buyer changed his mind.

What should I do if I make this request?

Do I need a refund?

Or can I ignore it because it's a simple change of mind?

1101 2017-04-26 Gentleman

popular What are the side effects of oats?

popular What is the deadline for purchasing lotto?

popular Is hair spray not allowed on the plane at all?

popular How can I resolve TLS security configuration errors?

popular Why does it say that your license has expired on your phone?

Same Tag How can I open a Galaxy S8 unlimited phone on Hello Mobile?

Same Tag Please recommend a screen protection film for Galaxy S8

Same Tag Do I need to buy a new USIM when I change my smartphone?

Same Tag What is the actual error of the gps?

Same Tag Which smartphone is the best in terms of cost-effectiveness?

Same Time Can I go on a diet with an indoor bike?

Same Time What should I do if I ask for a refund again if I sell my cell phone secondhand through a personal transaction?

Same Time If I want to enter a specific folder in Windows 10, do I need to know the password to make it possible?