Dining Plus — waste of money...

i bought a dinning plus card after the agent convincing me about the sure discounts on the booklet.i spend some 2500/- on it and its valid upto 2 years.but i didnt know that it will be such a wste of money.when i produced the card in pizza hut they said i will get 15% discount on the bill when i come next time to the same shop.i couldnot argue with them.karaikudi was more than happy to accept it.and they gave a 15% discount on the bill but to my surprise they then added 15% tax to it.so,basically ,i get nothing.lot of places it is just not accepted even if their name is on the booklet.itz just sere waste of money and getting insulted....nothing else.they better stop this dinning plus thing..itz crap.and no proper response in the customer care also