Spice Jet Airlines — Spicemax service

PNR: QHTC9H. I travelled from DXB TO IXM. I booked through Mobile app and received my spicemax seat 2F, 2E but food & beverage was denied as it was not mentioned as spicemax passenger. And I paid for the service. I was over charged also as seat was 140aed and I paid 186aed. It was intimated by the cabin crew. So spicejet over charged me for the service i didn't receive. Very disappointed and unhappy with the service