Condom-based promotions, racist ads for brownies, accusations of franchisee bullying, awarding sex crimes with prizes on social media … Hell Pizza has often been on the wrong side of the authorities over the years for its controversial marketing stunts. But the shoe is on the other foot now and, in quintessentially cheeky Hell style, it’s sent a “cease, desist and go sit in the corner” letter to one of its major competitors, Pizza Hut.