[mikester]

They have a contract that specifies work for a period of time, that period of time is written into the contract. The client is supposed to pay on a weekly basis. The deposit is applied to the end of the contract.

The client did not pay twice, they booked my friend for a period of time and are terminating the services early. Even if it were my friend who had been there for a week and been paid the question of the deposit would still be the same in this scenario (I believe).