Does anyone have any general advice for someone who's new to phone sales?

I've been working at an inbound call center for a retailer who sells Dish Network and ADT security. I'm currently selling Dish, and if I do well enough over a period of time, I will have the opportunity to move up to ADT security. Before this job, I'd never sold before. I know the product very well and I'm getting the hang of sales. Unfortunately, my coaches and supervisors aren't much help when it comes to selling tips and techniques. Everyone kind of expects you to know how to sell when you start here. So if you have ANY advice whatsoever about the process of a sale, handling common objections or closing the deal, I would greatly appreciate it. Honestly, I think that the thing I have the most problem with is when someone calls in and only wants to inquire prices. They don't want to hear what I have to say, they just want to ask a few questions and get off the phone. How do I control the call without being rude and how do I sell to them without sounding like I'm trying to sell them?