Bharat Sanchar Nigam [BSNL] — recharge expiry

I had done a recharge of amount 446 on sep 21st 2018 expecting the promised data package for 72 days. But after 40 days the offer was withdrawn without prior notice. when contacted customer service they said that the offer was temporary and promotional. But this information was not given while recharging. I have lost my money as the data that was promised is not provided. Since it is a failure from the service provider, appropriate compensation has to be made.