Welcome to the community!
A few things worth checking first:
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card details and billing address/postal code match exactly
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card/card issuer country is supported
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VPN/ad blockers/pop-up blockers are off
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3D Secure/SCA redirects or bank approval prompts are not being blocked
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try an incognito/private window, different network and another payment method if possible
OpenAI’s help article has the usual checklist here:
https://help.openai.com/en/articles/7232916-why-was-my-credit-card-declined
If the bank still sees no attempt after all that, Support probably needs to look at it from their side. In that case, I’d recommend that you open a support ticket, either through Help or email them directly at support@openai.com.