Don't take pepsi (on which zero sugar is written) at PVR thinking it's zero sugar.

So i went to the PVR Vegas Dwarka, as usual I ordered popcorn and pepsi, I've always known that the pepsi they offer has sugar in it, but after I came back from college after a while, i noticed that every glass of pepsi has *Zero Sugar* written on it (been noticing for few months now) , so i thought they made changes as every board or advertisement inside pvr had the same image of zero sugar glass and all sizes of pepsi has this zero sugar written on it, when I went for a refill I just asked randomly that "is this actually zero sugar?" , and the guy on the counter said "No" , i completely lost it, as I'm on strict no sugar diet, he said that zero sugar is just written for advertisement you have to ask for diet Pepsi to actually get it, it totally make sense to ask diet Pepsi if u want it, but no fckin where it's written that the normal pepsi they are selling in glasses which has zero sugar written on it, any normal person would think it's zero sugar and won't explicitly ask for diet Pepsi when every cup has zero sugar written on it, I asked him call his manager, who was not ready to accept the mistake that the its wrong to advertise false claims, he in flow of our conversation said that they serve every drink be it miranda or etc. in same cup which has zero sugar written on it but has sugar obviously.

Can someone advise how i can actually raise this issue coz like me many people might be thinking they are drinking zero sugar but actually it's fckin sugar specially diabetic patients or ig I'm just very very dumb.

Now I'm feeling guilty of drinking the entire bigahh pepsi with sugar in it.

Things can be different in your nearby pvr.