State Bank Of India [SBI] — Fraud transaction

Address: Ahmedabad, Gujarat

I got a phone call from mobile. No.[protected]-[protected]. This people gave me an offer that i will get 6 months free internet if i deposit rs.2100 in their account. The details are as below
. Ritz communication ac. No-[protected] of sbi bank. I deposited the amount but did not get the free internet. Next day l called both the mobile no but no reply. So i think it's afraud transaction. Please help me with this.