Ask How do I prevent overcharges of member on membership site?

[SuperAffiliateX]

I'm running a membership site and users are complaining about unexpected charges. I'm checking my payment gateway for errors. I'm verifying subscription plans to ensure accuracy. I want to prevent financial mistakes. I'm looking for tools to monitor transactions and detect anomalies. I need to build trust with my users. I'm open to any strategies that work well. How do I prevent overcharges of members on my membership site?