My buddy back in Philly has a good idea for this. To avoid the cold calls and to get around his wife's nagging about betting on the games he bought a cheap prepaid phone and uses it when he gets away from her. All that he does with it is make bets on weekends and calls up scorephones. During the week he uses his regular cell at the office, but makes sure not to use the scorephone so they don't get a number to call. After prime time and on weekends prepaid phones are very cheap, so the timing works out very well with football season. If someone ever calls the second phone, he knows it isn't something he wants to answer. Just an idea...