SalesCo interview questions

I was greeting by two gentlemen and was asked to have a seat and someone will be there shortly. I was asked normal interview questions. I did not ask before the interview was scheduled if this was a Sales position. I got there and verified that indeed it was a sales position. I politely told the gentlemen that I was not interested. From this experience I am learning to ask simple questions so that no one is wasting their time. Lesson learned.