the unexpected thing about Talking To Your Representatives is that it can actually work, if enough people are similarly mad about the same thing. you won’t get the elected on the phone. but they will hear about it from their annoyed staff, who might not have time to do anything else
There is free fax software that lets you send a limited number of faxes for free, I have done this to send stuff to congress (especially outside of my rep or senators since they tend to filter those out otherwise). Immediate and in writing.