My order is returned, they couldn’t find my adress

Hello, I ordered a package and I still didn’t receive it. The shipping company that normally should delivered it, was bpost. They send the package back because they couldn’t find my adress. I tried contacting bpost, yunexpress dhl, dhl/dp and nobody could help me. It is frustrating and I don’t know wich step to take further, can someone help me please?