Lost a song that I added

[JamesPA]

I added a song a few days ago that I thought was really good to my saved songs (clicking the check). I guess the internet swapped later on during the day and when my phone went to offline mode it deleted the song from the list. 

The song was in my Daily Mix but now it's not. 

Attempting to look up the song via lyrics that I could remember, but to no avail. 

I was wondering if there is anything that Spotify can do to look up the songs I added in the last 48-72 hours to my account that may have been removed?