And from audit the service usage of 2 Number on December 2014; we found that there were the service usage total 47,403 Minutes which paid revenue sharing in rate 85% instead of 80% according to condition of contract. It is result the payment of revenue sharing over amount 9,068.04 Baht because of the restriction of report center system can be define rate of revenue sharing only one rate and the revenue sharing was not adjusted according to condition of contract.