Spotify's official Contact us page says the main consumer support route is to message customer service through its help flow. If you cannot solve the issue from the help articles, the next step is the messaging route rather than a standard public phone number.
Spotify's own support pages in multiple locales also state that the company does not currently offer support by phone. That matters because many frustrated users waste time looking for a number instead of using the support channels Spotify is actually maintaining.
The Contact us page also separates the self-service routes clearly. The Spotify Community is for peer-to-peer help and recurring issues, while Spotify for Artists, Spotify for Creators, and Spotify for Authors each have their own dedicated help centers because those are different products with different account problems.