IP Blacklisting?

SORBS DUHL | was listed
Spamhaus ZEN | was listed

Any time I get a new IP from my ISP these two add it to their list. I have people who need to access Canadian Federal Government websites and can’t because of this. So I’m sad to say I can no longer donate bandwidth at this time. If anyone has a solution to the problem that would be great, I have contacted SORBS to get my IP removed however it was back on their list 5 days later.

Are you running an exit relay at home? Unfortunately, we live in a society where you have to put up with this if you do: Tor Project | Tor Exit Guidelines
Or is it a middle relay?