I forgot to cancel my subscription before the current billing cycle started and I got charged. What can I do?

Articles in this section

• I purchased a Tarteel annual subscription and didn't use the app for a while, can I get a partial refund?
• Google Play / Apple App Store have refused my refund request. What can I do?
• I forgot to cancel my subscription before the current billing cycle started and I got charged. What can I do?