B1 Visa question

My DS-160 form is already submitted and I couldnt make it at the appointment date that was taken. So I took a new appointment date and went there…the VO said why you did not went for Biometric appointment and sent me back.

My question is 1) I already did Biometric 1st time but did not went for actual interview. 2) VO sent me back stating that Biometric is not done? 3) If I book the appointment again, shall I go for Biometric again? and submit a new DS-160 as I need to make some changes in the form. If I make a new DS-160 form, do i have to pay the fees again or I can change the application ID on the fees so don’t have to pay.

Please suggest.