Indigo Airlines — Cheating Customer who are not informed on Web fare vs Call Centre Bookings

I tried bookng a ticket thru' compant website and got a fare for dubai-del-dubai for 1 adult and 1 child as AED 1634. Got stuck in payment page so tried for a resoulution thru the call centre. To my amazement, they offered to book directly and when it came to giving me the price for the same ticket, same day and same specs is got a rate of AED 1700++ . Is this not cheating ? Indigo Airlines should explain this.
Earlier, last month, for a typo error in surname of SINGH vs SINHA in the family name of my Father in law, i was made to cough up INR 1500 for every sector. Paid INR 3000 for a typo.
In the name of low cost airlines INDIGO takes consumers for a ride. Obviously covers itself by "sign the I AGREE field" where no one reads the fine print.
I am really distraught and hence this mail / complaint