[Resolved]  Big Bazaar — extra charges while showing less on product

I have purchases pulses and other items from big bazaar, invoice no. #726/15670 dated 11/11/09, some pulese like rajma & tur dal price tag on pulse packet as well as shown on local counter was 35Rs/500Gm & 122 Rs/kg respectivly, but when i cross check items with bill after purchasing these product , i found that these charge 36 Rs /500 Gm &134 Rs/kg respectively.
I complaint to there customer care counter next day the customer care representative checked after spending one hours to other work and confirmed that there is mistake from there end but he could not do any thing this time as his seniour was not available that time , as per him we can claim this amount any time , so when after few days we went there then another representative was there and according to him they entertain any complaint within one week, so they are unable to do any thing.
This is realy shame that how they treat to there customer while the problem is at there end , i register my complaint not for money but to improve our system.
I am attaching all documents in my photo column