Firewall log

Need some help!! As soon as I sign on to internet, firewall log is slammed with call for WWW pages via IP with same number as mine (ie. 00-00 the rest different) and whois lookup indicates same ISP as mine. Is my ISP snooping on me? Different problem - same IP situation and ISP but 'person' is scanning high number ports with all sorts of notations, some unrecognized by firewall, and this appears to be a hacking attempt. Even all of this is blocked the flooding goes on. Automatic or 'person' initiated situation? Anonymous email to my ISP does not seem to help. :( Comments appreciated.