Well I finished the darkbrotherhood quest line and I thought I would join the Companions. So I go there and get the starter quest. I finish the part with Vilkas and I get his quest. He then immediately starts talking to me randomly. I exit conversation, walk forward and he starts talking again. I exit walk further, he chases me and talks to me again! At this point I'm mad so I start doing different stuff like talking to him and clicking all options. But still he won't stop chasing me and talking to me. He even interrupts other conversations. Also at one point he even followed me out of town!

Please if anyone knows how to fix this I would be greatly thankful.

List of stuff I've tried:
- reloading save and redoing quest
- quitting game
- killing him
- Console command killing him
- Talking to him over and over again (pay back!)
- Trying different approaches during starter quest
- Running away and waiting a day and gonig back
- Killing him more (at this point I just want him dead for good)