Utterly Poor Service Delivery

I ordered a parcel through Shein on 30 September - they use Buffalo couriers. Previously I orded through Temu and Buffalo was also used and found my house without any problems. With Shein they cannot find my address even after I sent pin locations to their email -which by the way, no one bothers to answer. I changed my address to a more convenient place for them on my Shein app and I have sent them proof that this was done. I have again send a pin locations, After numerous calls and emails I am still no where near to know where my parcel is and when it will be delviered and no one bothers to either find my house or update the system to the new address I gave them. I have asked for management and behold, I cannot speak to one. I am utterly disgusted with this service and will for sure not make use of these facilities again and I will be sure to inform other people of this poor poor poor service. My parcel is who knows where and no one bothers to get the systems updated or get someone to call me back, My daugters school function clothes is in there and what will I tell her when she has nothing to ware - just because the staff at Buffalo are not capable of getting me assistance and do not even talk about contacting Shein because you speak to stupid robots which also brings you now where.