Thanks for reaching out about this here in the Community.
Just to confirm, have I understood you correctly about the issue being that someone has deleted almost all the songs in one of your playlists? If I didn't, would you mind letting us know a bit more about what happened so we can take care of this with you?
If that's the issue, first, it'd be great for you to follow the steps in this support site article and reach out to our Support team so that they can restore your playlist to the way things were prior to this episode you're reporting. In the meantime, it'd also be great for you to read and follow the steps in this other support site article since it features some essential info regarding how to keep the safety of your account up-to-date.
Hope you'll find this info useful and looking forward to your updates. Let us know if there's anything else we can help with!
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