I just cancelled Spotify and switched to Tidal a few months ago exactly because of shenanigans like this. I was getting popups to look at recommended eBooks that I had to buy.
That was it for me and I cancelled immediately. Between the ads and the countless bugs and issues I had while using their app, glad I made the change. Been a premium member with Spotify for almost 10 years.
To Spotify's credit, when I cancelled, I forgot and did it 2 days after it renewed and asked customer service for a refund. They did it no questions asked