When you face issue in the download session , who is the person that can help you to fix the issue ?

The question is a bit confusing. Is it like downloading speed, or an issue regarding some specific file?

If it's related to speed then you should contact your internet service provider (ISP) they will do troubleshooting and everything will be fine.

I belive the person who highly experts and involved in this matter is the one I would ask for his help