How do I delete notification tones?

[debbieparker]

I downloaded a free message tone program for my Galaxy S6. When the program wanted me to sign up permanently, I deleted the program but the message tone remained. How do I delete that message tone because what ever stock Verizon message tone or MP3 song I upload now does not work. This program has overwritten all of the message notification tones. Thx!!

 

[Javier P]

Which app was that? Did you ever select "always use" for that app when setting a tone?