Strange call asking to shut down my crypto wallet

Hello!

I just received a very strange call from a lady with Ukrainian accent. She said that she's from bitcoin blockchain and my crypto wallet is about to expire. She asked if she could shut down my wallet, or I'm withdrawing the money. I freaked out, so I said I will withdraw it later and ended the call. All my crypto is on binance, I don't have any bitcoin at the moment, just some ADA, LTC and some other crypto, I can't find any information about expired wallets, and also no luck with finding information about the number. Is this some sort of scam call, or I'm just a total crypto noob, and I did something wrong? Before I ended the call, she said it's ok and asked whether I need help with withdrawing it, I said "No, thank you" and ended the call. Can someone enlighten me what happened?