We charge a deposit rather than running credit checks because we understand a lot of our younger customers may not have enough credit history built up yet. We let all customers know about the deposit when they sign up and in our terms and conditions.
A deposit is equal to one month's payment plan and is paid at the start of your account. Your deposit is returned to you when your account is closed. This will either be refunded or go towards any overusage to avoid large final payments.