Airtel — Please refund my amount

I have contact airtel for fibernet connection by registering my Mobile number via below URL

https://www.airtel.in/broadband/feasibility/?lf_open=799&utm_source=pfx_google_search_broadband_brand_chennai&utm_content=broadband_brand_chennai&utm_medium=b...⇄Airtel_Srch_Brand_Top_Mover_Chennai&utm_adgroup=Broadband&kwd=airtel%20broadband&cid=ps&gclid=Cj0KCQjw6ar4BRDnARIsAITGzlDx_81AgxjqcyOJnetPdQ7eTjWgZw...⇄

So that i received continues call from your agent's one of your agents name SANDIYA her registered mobile number
+[protected] is and my CAF number is [protected]

I have choosen Rs: 799/- pack there it has been mentioned as 100 mphs speed I believed that and i made payment form after few days later an engineer form airtel contacted me and he said for North madras it's possible only at Range 20 - 40 range alone. To check that i have called her for many number of times but she refuse to pick my call i also contact airtel customer care number they to refuse my calls so i believe it's a false promise form her and airtel