DoCoMo — Validity Issue

Address:

Pune, Maharashtra

I have recharged my DOCOMO mobile on 12 June 2012 of Rs 34 SMS voucher which gives 2000 SMS for 30 days.But I got back reply that validity is for 15 days. According to their website and retailer outlet advertisement,Rs 34 SMS voucher gives 2000 SMS for 30 days.I have been talking to their customer services and they are coming back with the reply that your SMS pack validity will remain only for 15 days.So kindly take strict action against Docomo services for publishing false information and adjust amount into my balance or compensate me.
I have not used even single SMS till now and they are saying that ticket will be resolved by 25-June-12.