[SpamCop-List] What else can I do?

[Bud]

http://www.spamcop.net/sc?id=z835474185z871b780bc0593092f83f33a6fb0f80d4z
http://www.spamcop.net/sc?id=z835474521z36a3156ae86a74751d9f638003ee7a0ez

I have been plagued for the last two weeks by spam coming from two IP 
addresses (24.108.176.223) (24.77.60.120) which I'm going to assume are open 
proxies. I have SC reported every one. I have reported each IP address to 
internet.abuse at sjrb.ca which is Shaw Cable. I received what I imagine is a 
standard response:

"Thank you for your information regarding the alleged violation of the Shaw 
Internet Acceptable Use Policy.
 Based on the information provided, we have identified the offending 
computer and will take appropriate action(s).
 These actions may be:
- Issue a warning by email indicating a complaint has been registered
- Issue a warning that service may be suspended if activity continues
- Suspend or terminate Shaw Internet connection to customer"

Acceptable Use Policy Management Team
Shaw High-Speed Internet Service
Shaw Cablesystems G.P.
2400 - 32nd Avenue N.E.
Calgary, Alberta, T2E 9A7
Telephone: (403)750-7420
Facsimile: (403)539-6831

<mailto:internet.abuse at sjrb.ca> (gb)
<https://secure.shaw.ca/policy/Use-Policy.asp>

I don't want to filter this spam because it's now become a crusade for me.
I could phone, but I'm not sure at this stage I could keep my composure.
What can I do to get through to this provider?

--
Bud