Annoying "Cha-Ching" sounds

[AC Question]

Have a Note 4 that constantly annoys me with repeated "Cha-Ching" sounds, have tried everything to find its source including blocking all app notifications. Please HELP, any suggestions or software fixes. Thank you

 

[Laura Knotek]

Welcome to Android Central.

Do you have NFC enabled on your device? Could your device be making contact with a magnetic strip on a credit card or driver's license, causing the sound?