I’m charged .99 for something I don’t use and I want to cancel it but I can’t find it under subscriptions.

See your purchase history in the App Store or iTunes Store [iOS, computer, or web] - Does not include purchases made by others under Family Sharing; those have to be checked from their accounts.

http://support.apple.com/HT204088

Also read this link -->

If you see ‘itunes.com/bill‘ or an unfamiliar charge on your bank, credit card, or debit statement - https://support.apple.com/HT201382

It may be a subscription a family member has started. 99c woul match an iCloud storage upgrade. If neither you nor a family member (if applicable) has a record of this purchase and you only saw it on a statement for a card you alone control, contact your bank or card company about card fraud. Apple does not handle that.

If you now recognize this purchase and are asking for a refund then realize Apple's terms of purchase for most countries are effectively, "All Transactions are final" (check terms at: https://www.apple.com/legal/internet-services/itunes/us/terms.html ). Apple does refund on a case by case basis, but they can also refuse.

Request a refund for apps or content that you bought from Apple - https://support.apple.com/HT204084

Report a Problem - https://reportaproblem.apple.com/?s=6

If a reporting a problem request is unsuccessful you can also try clicking here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product.

If you do not see it in your subscriptions and you are a family sharing organizer then it is another member of your family who has subscribed. You cannot do anything other than ask your family members who has subscribed and then get them to stop the subscription or pay for it with gift card or other balance added to that person's account.

If you are not in Family Sharing then contact Apple using a method I provided earlier. Normally I would say you should not contact Apple but instead contact your card issuer about card fraud but I have a hard time believing somebody would fraud to the level of 99c per month.