RUDEST TELESALESMAN EVER

Just received a sales call from a Telkom rep to tell me about a limited promotion. I'm at the office so i don't want to waste my or his time and told him very nicely: Sorry to interrupt,, but i don't want to waste your time, i'm not interested, but thank you very much for your call. He just put the phone down in my ear without a word. Swear i heard the phone slapping down on the other end. Just say thank you and goodbye. This reflects badly on the entire company so i would suggest you raise your standards when picking the telesales reps that you appoint. Just saying....