The short answer is; probably not. Unless of course you actually pay for that service. An ISP does exactly that, it supplies you with Internet Service - if that's all you're paying for that is all you will get.
As far as I know, at least in the UK I could not contact any ISP and ask them to help me with spam prevention because not only do I not pay for that, they don't even offer it. Obviously, this can vary depending on your location but unless your ISP explicitly offers that kind of service to you (for a fee of course) then chances are they will not even be interested to hear what you have to say.
If they don't provide the service they don't provide the service and unfortunately, they're not going to change their business model for you and start selling spam prevention as a service. Your best choice is to see what spam prevention methods your mail provider can provide you.