I had a post a while back about having a choice. I refused to get these calls from Wells Fargo. I went into my account settings on my Verizon account and blocked this number. When you block numbers directly through the Verizon account, you do not see any attempts of the number trying to call you. Nothing pops up saying the call was blocked. This provided me peace of mind.
Now I'm not saying that people should forego their debt/loans. I tried and tried to work with Wells Fargo on alternatives to foreclosing my house. Wells Fargo was insanely difficult to work with. At some point, you have to let go. I stopped attempting to sell my house and walked away from it. My mind was made up, and a stupid automated calling system wasn't going to draw me back into thinking about my house.
If you have an annoying caller calling you, look up in your account settings on your cell phone provider to see if you can block the number directly. It's a great feature.