Flying Machine — Did not give bills for your purchase

We went to shop from flying machine showroom in elante Chandigarh. At the billing counter the lady didn’t ask our contact details for generating the bill. Gave us the product without giving any bills. Wen we counter her fir the sane she told network error so she couldn’t generate the bill. She told us after sometime u can come and collect the bill.
Suppose if we wouldn’t have asked her about the bill she would have kept quite. Highly unprofessional will never shop again from that store. Cheaters….