I Can't Play My Music Or Use Deezer, Random Favourite Songs

I started seeing random songs in my favourites, and when i deleted them they again reapered. Today I started playing music but it kept disconnecting me because someone else is using account. I never gave passwords to anyone. I use deezer on my phone and computer. I don't know anyone who listens to that kind of music that is adding to my favourites. Someone keeps disconecting me from my playing trying to play something else.