Securities and guarantees
7. A promoter of, or a participant in, a trading scheme shall not accept from a participant any guarantee or security in whatever form in respect of goods or services supplied or to be supplied or in respect of the payment of the price for goods or services supplied or to be supplied or an undertaking to provide such a guarantee or such security unless the creditor or a promoter or other supplier who is not a creditor has agreed in writing to refund the amount of that payment to the debtor upon his returning the relevant goods in an undamaged condition to the creditor or to any promoter or supplier.