I used a several telephones at IND airport. They advertised local calls at $.50 and long distance for $1.00 for up to 4 minutes. Every phone I tried would not accept coins. I used a credit card to make 7 calls, and was charged between $32.24 and $38.60!!! Just like the other complainant IOS offered me a token ($11.00) refund for a 90 second, local call. Unfortunately, there is no way to know what the charges are until they hit your credit card statement. read full review »