These have a promotion on at the moment, but it seems they will not give you the free bet citing this nonsense.
You'd think in this day and age, if a book offers a free bet promotion IT'S GOING TO GET POSTED ON ******* FORUMS YOU MORONS! 
Dear Mr Forum Reader
We have been alerted to a forum which search’s for loopholes in gaming sites, unfortunately your account has been tagged from the forum so is under investigation, this is specifically why our terms enable us to withdraw any bonus and also apply an administration charge to these accounts.
See terms and conditions below;
1.Where the terms of any offer or promotion are breached or there is any evidence of a series of bets placed by a customer or group of customers, which due to a bonus, enhanced payments, free bets or any other promotional offer results in guaranteed customer profits irrespective of the outcome, whether individually or as part of a group, Cricketbet reserves the right to reclaim the bonus element of such offers and in their absolute discretion either settle bets at the correct odds, void the free bets or void any bet funded by the deposit bonus. In addition Cricketbet reserve the right to levy an administration charge on the customer up to the value of the deposit bonus, free bet or additional payment to cover administrative costs.
Regards
Cricketbet
We have been alerted to a forum which search’s for loopholes in gaming sites, unfortunately your account has been tagged from the forum so is under investigation, this is specifically why our terms enable us to withdraw any bonus and also apply an administration charge to these accounts.
See terms and conditions below;
1.Where the terms of any offer or promotion are breached or there is any evidence of a series of bets placed by a customer or group of customers, which due to a bonus, enhanced payments, free bets or any other promotional offer results in guaranteed customer profits irrespective of the outcome, whether individually or as part of a group, Cricketbet reserves the right to reclaim the bonus element of such offers and in their absolute discretion either settle bets at the correct odds, void the free bets or void any bet funded by the deposit bonus. In addition Cricketbet reserve the right to levy an administration charge on the customer up to the value of the deposit bonus, free bet or additional payment to cover administrative costs.
Regards
Cricketbet