Airtel — fraud case about sim

I Deba Prasad Chakraborty, my all three numbers [protected], [protected] and [protected] had been portabled from Aircel ti Airtel on 17 and 24 Mar 2018 and new sim recharged with Rs. 179 (178 + 1) the retailer told 1st month all calls free and next 2 months all calls 30 paisa/ Min, and same msg had been received in all three numbers. But after 56 days they started cutting 2 paisa/1 Sec i.e. normal charge. Now my question is that after giving the messages why company is not providing the same service so this fraud case is doing by the company. I am an ex serviceman and want justice on this matter immediately. please take the action as early as possible.