This problem has been happening on both my iPhone 6s and my Macbook Pro. I have tried logging out, changing my password and logging in again but still the problem persists. Whilst I have a song paused it will randomly start playing again and whilst a song is playing it'll skip to the next song every now and again without me doing anything.
As well as this problem, random songs that I've never heard of keep being added to my 'liked songs'. Every few days about 10-20 songs will be added. Its very annoying and was wondering if anyone knows of something similar happening and if theres a fix for it?