LinkedIN does nothing about hacked account

I suggest everyone close their LinkedIn accounts. My account was hacked three times in one week. I reported it to the SAPSand LinkedIn. Then LinkedIN denied me access to my own account while they said they would investigate, stating I must supply an affidavit confirming my identity. When I supply the affidavit in the format they request, they say they are closing my inquiry. Now I have no access to my own LinkedIN account and the hacker probably still does.