I followed Gollum Ei into the Shipping Company and right after he went in i followed and his marker is far away, my map cant even find it and I overwrote the save thinking there was a door or something, but there isnt i finally found the door into the cave and it said "Confront Gollum Ei" but the maker points back into the Shipping company and he is still way out there and i would start over from older save, but i made a lot of progress since then and don't want to restart from 100 hours. Is there a way Bethesda can fix this?

Have you tried locating him? Is he even in the warehouse? I wouldn't think it a glitch unless he has disappeared. He may just have gotten hung up and you need to get close to him to get him moving again.

Yes I checked the warehouse i checked everywhere i spent almost an hour looking and right after he went in i followed i was right behind him the whole time and my sneak was pretty high and it was night so it was easy to follow him

Did you follow him through his secret passage underneath the crates on the far side of the warehouse?

no he disappeared when i very first entered the warehouse i killed all the guards in frustration and found that cave and my quest updated but it pointed back into the warehouse so he is in the Interior cell some where i just can exit the build to find him and i killed all the people in the cave and ended up on the other side of Solitude so yeaa