Good catch. Now OP's IP can lead to his personal details. It's enough to contact the VPN to reveal his payment method, that will lead to his paypal account, and through it to his bank account.
OP, I'd advise you to use TOR instead of a VPN or use VPN that accepts bitcoin and remember that you're never 100% safe and anonymous. You'd have to steal internet connection, like hack into your neighbor's wifi. This combined with TOR and a clean computer with linux would give you a decent level of anonymity.