We also have the Smart Vest. We do 30 minutes twice a day, and have the Hz at 10 for 10 min, 12 for 10 min, and 14 for 10 min. We keep the dial at 30-40. The company has been really good about replacing things too. I felt like the vest wasn't working as well a couple months ago, and they sent a new one that day and a box for free shipping to return our old vest. Very easy to work with. When we received our Smart Vest, they did have a rep. come to our house to show us how to work it and the setttings. I'm surprised no one came to your house. You may want to call them about that.
Zoe mom to Kate wCF