Lies about hidden fees

MR. D States that they have no hidden fee's and that is a lie their food cost more than it actually cost at the restaurant for instance the romans pizza one topping special is R109 at romans pizza while it is R131.90 on the mr d app that is a hidden fee of more than R20 on one item only. Why lie about not having hidden fees if there are obvious hidden fees of more than the visible service fee which is R15.