My Dad has a cold calling sign on the front door but despite this THREE men were at the door selling your windows. My Dad clearly told them that he was not interested as he already has someone coming round to replace some windows. They forcefully continued to try and sell Zenith windows to him. My Dad had to tell them three times that he wasn't interested but they seemed intent to continue hassling him, so my Dad had to shut the door on them. These THREE men intimidated my Dad and made him feel very uncomfortable. My Dad is 76 years of age and I'm disgusted that your THREE salesmen made him feel this way.