Relaxo Footwear — not issued bill and defective shoes

V bot shoes on 21.9.17 from rohini sector 15, article ws on discount (Rs 1005) bt th salesman deducted th full amount (Rs 1623) from credit card. Salesman also refused to issue bill bcoz of technical error in machine. Staff cheated and misbehavd with us.
Kindly look into this matr as v r sending th details to consumer court n delhi police.
Mw thy hav givn duplicate bill if wrong date.
Salesman misbehavd n not listening to th matr