2 stock plans

I seem to have 2 stock plans. One for $30 and another for $20. The $30 plan was paid and shows that on my account. The other plan states it hasn't been paid. I tried to change payment and it accepted it, however my account still says payment info needs attention. I'm wondering why I have 2 plans to begin with? How do I cancel one of these plans. When I access the plan that states non payment, It comes up just like my $30 plan does. I need help. I see that the $20 plan states On Demand. I don't remember ever ordering or using this plan. How do I cancel this plan? Thanks