Chacham's Journal: Question: Comcast copyright violation (from another user?)

Comcast is my ISP (again), and i have been receiving copyright violation notices.

Evidence:
Case ID: (removed)
Work Title: Maid to Obey
Copyright Owner: Froytal Services Limited DBA Brazzers
Unauthorized File Name: Jessie Andrews And Joslyn James - Maid to Obey
Unauthorized Hash: d48d521f033c2fb816c7dbf13753f5dcbe9dab0e
Unauthorized File Size: 497576269 bytes
Unauthorized Protocol: BitTorrent
Timestamp: 2014-03-27 06:12:08 North American Eastern Time
Unauthorized IP Address: (removed)
Unauthorized Port: 20036
The following files were included in the unauthorized copying and/or distribution:
File 1: Jessie Andrews And Joslyn James - Maid to Obey/ham_jessie_joslyn_jd020713_480p_2000.mp4

I use qbittorrent on my mac, but never downloaded that. And this isn't the first infringement notice for similar movies (guessing by the names).

Maybe it is from one of the people using my connection, as a couple neighbors and a few friends have the password. I just want to get rid of the problem , i don't really want to know who it is.

I mentioned to my neighbors and one friend that i have been getting the violations, yet they still come. I may have to block access, but i want to let these people use it, if possible.

Any ideas on resolving this?

I'd change the wifi password

[Marxist Hacker 42]

Then talk to each person who complains, one by one.