The unsubscription is not successful.

Error message is :
:11:-2147352567:31:Method '~' of object '~' failed:0::0::11:-2147352567:31:Method '~' of object '~' failed:194:START: VBErrorInfo Description: Method '~' of object '~' failed HelpContext: 1000440 HelpFile: LastDllError: 0 Number: -2147352567 (0x80020009) Source: Agent_BUS END: VBErrorInfo :312:START: AppInfo ComputerName: PAZ02HTP3642 Operating System: Windows 2003 5.2.3790 (Service Pack 2) Time: Fri 2015:05:22 05:58:53 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 14.71.1 Unattended: True Retained: True StartMode: 1 Thread: 6400 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {A7DDA440-82DE-4FF6-B32A-81F91A17479A} ContextInfo.ContextId: {E29F65BB-E2FF-451A-A023-6499ACA1DBB0} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {86DCC67D-3B6F-4F25-A43D-7BCFE1DFA43F} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3642 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: