I'm always findind this problem with ads: while I'm listening to music sometimes an ad starts, but it's too loud!!! Spotify should make ads audio equal to music one. I do not want to hear againg too loud ads in my ears!!!!!!!
Updated on 2019-07-16
This idea has already been suggested and implemented here. However, if you're still having trouble with this make sure to add a comment including the advert and the market that you heard it in.
Hope this helps!