In some cases, because of your credit rating or usage charges, we may require a refundable security (or safety) deposit. This may happen at any time during the term of your service agreement. We will give you the reason why we're asking for a deposit. When the conditions justifying the security deposit no longer apply (typically when you make six monthly bill payments in a row, in full and on time), we will apply the security deposit and any earned interest against any outstanding amount owing, then refund you the balance of the deposit, if any, within 30 days. Security deposits are explained in section 44 of the Wireless Terms of Service and conditions, which is your agreement with Bell Mobility.