All of the specific anecdotal reports of errant locations I've seen have been because the Party's database (which Clinton is using) lags the state's database -- so people who have changed addresses are getting the wrong location. That's not really something the Clinton campaign can be expected to do much about.
Beyond that, there's always a few idiots who don't understand the system, and do things like giving out their personal form as a blank form to friends. I haven't heard allegations of the campaigns doing that sort of thing, but even in that case, I usually assume incompetence before malice.
The more annoying thing has been the several pro-Sanders text messages that have been mass-spammed to Washington cell phone numbers over the last few days. Obviously not an official campaign action, but holy god whoever is doing that needs to stop.
Okay I get it - People are using the text & call thing so you're likely to get some calls & texts! I assume you will get from both campaigns but Bernie's people will likely be a bit more enthusiastic!
No. You're not allowed to text or autodial cell phones that haven't opted-in. I think this is just some vigilante spammer.