Bad service

My package was supposed to be delivered on the o4 oct ,when I check my SHEIN app order has been returned due to wrong address,I then edited my address and waited days for my delivery,today 10 October I received a call from a driver that he was delivering and asked me to send him my location which I did,after an hour I called to check how far he was,his phone was off,at around 4pm I checked on my app it says I have received my parcel ,which I never recieved. ,I called buffalos call centre,I called 3 times spoke to your consultants and got cut off each time,I then emailed and was told they are investigating.what are you investigating your driver never pitched and worse he switched off his phone,your service sucks ,your consultants don’t help they just good at cutting calls ,I want my parcel