Shein Germany - Package lost

Hello good day :

On 12 September i ordered the headphone from shein and Dpd had to deliver it to me on 16 of September they delivered but i was not at home and they bring it to paracel shop and i didnt have any notifications from dpd or shein that my pucket is in paracel shop and which paracel shopso after 1 week they return it to the sender and just on that day i found out that dpd is delivering my package even i didnt know that anyway i contact the shein and they said your package is on way to you but when check dpd page and track my number is shows that return allready i got the massage again yesterday from shein that i have comfirm that package delivered to me wheil i didnt recive anything please look after this problem as soon as possible thank u