Pizza for discount

Today i ordered a pizza over phone with pizza corner. The guy at the other end said, the pizza would cost me 149Rs. I asked him are you sure its just 149rs nothing more or nothing less. He assured me its just 149Rs.

After an hour the delivery guy , gave me the pizza and i gave me him150 (feeling like god to tip him 1Rs he he), he informed me i have pay to 201Rs . On further inquiry he said that i was all the offer stuff added and subtracted for my medium size pizza and with taxes it had gone up to 201Rs.

I told him, i ordered a pizza for 149rs and i will only pay that much. If not you can take the pizza back. Pity the delivery guy. As he was involved in the first conversation, i called them up again and asked for the same person (luckily today i remembered the persons name and my order number, yes we do have an order number).

I just asked him only one question "Did you inform me taxes will be extra?" His answer was a "no". Then i said i cant pay anything more then if you cant deliver me pizza then take it back. If you are unable to make a decision give it to your manager.

The manager apologized for the error on his employees part, but i made him very clear i wont pay for the mistake of his employees either take it back or i pay what i ordered for. Finally i got my pizza for 180 as a compromise solution.

Its not that i am against these people, Just that why don't they say it all clearly and why should i pay for their mistakes.