in the event where the amount fo the sum refered to in clause 4.1 above is decreased regardless of whether or not such decrease results from the deeuction of such sum as payment of any debts owed to the service provider by the occupant, or for whatever reasons, the occupant shall, within 7 days from the date the occupant is in receipt of a written notice from the service provider, provide to or place a sum with the service provider in an amount equivalent to the decreased or shortfall amount such that the amount of the security deposit remains at the amount stated in clause 4.1