Rebels Pizza Mountain View Online Order Platform

We ordered pizza through the Rebels Pizza Online platform (Whatsup). We ordered just after 7 o'clock, an hour before there closing time. They only received our order around 9, by that time they are already closed. We went to the shop were we ordered the pizza. REBELS PIZZA MOUNTAIN VIEW. They sent a message to the Manager informing about this matter, we only received Feedback a hour after, no they will refund us. They sent me a "Proof of Payment" for the refund, which the money still doesn't reflect into my account after 12 hours now. But then they want to offer me a 50% discount on my next order....Pathetic