Is there no way to block just his number on a cell phone? I know you can do it with a regular one.
One of my friends was also stalked. She used a check to pay for a delivery pizza once and the delivery man kept flirting with her. She wasn't interested, she only appeared alone because her husband was underway. Anyways, he wrote down all of her information from the check and started calling her and even showed up at her front door with pizza out of the blue!
I guess he thought it was a kind gesture. She told him that she's married and if he talks to her again she would call the police. It is highly illegal for a biasness to use customer information for their own gain.
I really hope something like this isn't what happened to you. Unfortunately most stalkers are people we have met. I wish your husband could find that guy and give him a big punch in the face! I hate it when men enjoy making women feel this way. I am home alone many nights because of my husband's work and I would be terrified to be going through what you are. I really hope the cops stop that jerk.