Bharat Sanchar Nigam [BSNL] — bsnl recharge fraud by customer care.

Hello, few days back i got offer from bsnl of 429rs with benefits of 1gb internet and unlimited local+std for 90days.
Last night i thought to recharge this and called bsnl customer, they told me about details and benefits from 429 recharge

So i told them that i am interested and want to recharge, they told me that you have to go to near shop or you can recharge from main balance.

Later i recharged 220x2 to get full balance of 440rs

When i got total balance i called them from different mobile and asked for procedure of recharge.
They told me you can sms to 123
I tried but failed, so i told them sms is not working, tell me next step, he told me to call on *123#
I did and asked for next steps, he told me to go to bundle then voice then select this number.
I followed his step but later got msg of voice495.

I thought something is wrong so i called them again and they told me that you recharged of 495 not 429,

I denied and told me that neither i had 495 in account and i even followed steps of customer care while recharging and how it is possible to get pack of 495 when i had only around 450rs balance

He told me that doesn't matter and gave me stupid answer:
"you got discount on 495 pack and you got that in only 430rs."

I asked for refund but they denied to accept their mistake.