Years ago I had a salesman "cold call" by phone selling ball point pens. He went on and on and I listened to his spiel which involved a lot of fast talking with a Bronx accent. He was good. After concluding, he asked "how many you want?" I told him "none." He chewed my ass out for wasting his time and all I could do was laugh and hang up.
As for not liking "sales", everything one does on a daily basis involves "sales" one way or another if it involves dealing with other people. Gil