When they ask for your husband, just say "hold on, I'll go get him" or something similar and leave the caller waiting indefinitely. I've found that's the quickest way to keep telemarketers from calling back. Since they usually have a daily quota of calls or sales leads, they hate for their time to be wasted waiting for someone who may never actually pick up the phone.
This person called my gram a little bit ago. Asked if she wanted a subscription to Alaska Magazine. When my gram politely declined and asked the woman on the other end to not call again, the woman told her to "Go F yourself" and hung up!!! It is really sick that people would talk to a 77 year old woman that way..