I started to work in sales. I know a lot about industry (marketing, talking to ppl by phone) and I'm only talking with people that are semi intrested in the topic. But the whole thing is pissing me off. I got my first sale, but the guy backed off after seeing the agreement:(

Also i'm spending time on ppl, talking with them for lets say 30 min, working on the offer for another 30 and then they just block me or say random shit. Why cant they just say that they are not interested and stop wasting my time. Its pissing me off. Even more if the talk was good.

Any tips?