Is 877-203-54** an Apple customer service security number?

Apple has lots of numbers. However, they generally don't call you unless you called them first. If you have any doubts about a number that called you, contact Apple using a trusted contact method such as the "Get Support" link at the top right of every page of these forums or one of the numbers here:

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Dgw514 wrote:

I’m disputing a 16.32 charge on Sunday morning that I didn’t make at 9am in the morning please refund and cancel whatever it was used for

This is a user-to-user forum. No one here can do what you're asking.

See here for further instructions:

If you see an Apple Services charge you don't recognize on your Apple Card - Apple Support

I’m disputing a 16.32 charge on Sunday morning that I didn’t make at 9am in the morning please refund and cancel whatever it was used for