Airtel — [protected]-excess bill for feb 2018- isd roaming charges to be waived

I have taken Rs. 149/- for receiving ISD called on 21.01.2018 from your Himayatnagar customer care centre. The person specifically told me all receiving calls are free and I should not use data at Foreign Centre. I can use free wifi there. Accordingly I have not used data and used only for internal calls. Because of that I have not taken local SIM at Dubai which costs only 1200/-. Now I received a bill for Rs. 4407/- which is not correct.Roaming Charges of Rs. Rs.649/- per day charged from 23.1.18 to 28.01.2018 which is not warranted. Please reverse these chaarges immly.