cant update says refunded or purchased with another Apple ID?

Try signing out of the App Store/iTunes, restart, and then sign back in. Check the updates to see if the apps requiring an update are in your Purchases History. If they aren't in your Purchases History, you can delete the app, and download it using your current Apple ID if desired. If the apps are in your Purchases History, contact iTunes Support.

Purchase History Review  *

See the Apple Support articles below for contact information.   

iTunes Support – world wide   -

Apple Support schedule phone call   -       

If necessary, try Twitter

Apple on Twitter   -        

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.

I cant update my system says refunded or purchased with another Apple ID?

Then use that other Apple ID.