I didn't receive my parcel

I placed an order from Shein on the 7th October 2024, they've been updating me about my parcel through shein app, Buffalo international logistics it's the delivery company that has my parcel, yesterday I received an email from them saying I received my parcel..I didn't receive my parcel, I never get a call like they used too.i've been communicating with them through emails, the whole day it's back and forth.they can't assist me till now.....can somebody help me here.I Didn't receive my parcel ..who signed up for it?cos they said it's delivered 😭💔😭