Synapse Group

Received Postcards on Auto-Renewal for Subs ID #:[protected] for Sunset, Health, and travel+Leisure. We want to cancel the above 3 subscriptions, and only renew Digital Photography. However, the phone # listed: [protected] is not currently in service. Then we tried the on-line form at the cancel or renew website, but it got to a point where it wanted our credit card # for a "free trial" to a legal service. WE DON'T DO THAT. How can we get these 3 magazines cancelled by Jan. 3, 2011 as the postcards state?