Canceled subscription services for my boards but paypal still automatically charging

[toneloc]

I used to have a paid subscription part of my forums where members were charged each month to access a part of my forums.

I have canceled that service and opened up that part of the boards for free now.

After canceling all subscriptions, for some reason, paypal is still automatically charging several members each month.

I can't get a hold of the members to instruct them to go into paypal to cancel their subscriptions. They won't respond!

So, what else can I do on my end to cancel the automatic subscriptions?

Thanks!