Domino's Pizza — Service tax charged illegally and forcefully

Address:

North 24 Parganas, West Bengal, 700123

I bought a pizza from dominos today, it was a takeaway (Which was specified in bill) and they still charged me service tax!! When i asked the person handing me the pizza he said this is service charge and not service tax. My complaint that one cant charge service charge in a takeaway fell to deaf ears. I have been facing this issue on multiple occasions on dominos and it is wrong not just for the reason i described but also because service tax is being replaced now with gst and service charge should an optional thing. If i face this issue again i will gather all the bills of my friends of dominos and complaint to consumer forum as well as the fssai