First, make sure your cancellation actually went through, because Peekviewer subscriptions stay active until the end of the billing cycle and may still renew if not fully confirmed.
You should log in again, check “Subscriptions/Billing,” and look for a confirmation email, since without it the cancellation may not be valid.
If you’re still being charged, immediately stop the payment method itself, not just the account.
Cancel any active billing agreement via PayPal, your credit card, or app store subscriptions, since recurring payments can continue even after account cancellation.
For getting your money back, contact Peekviewer support with full proof (email, transaction ID, date, screenshots) and clearly state that you were charged after cancellation.
If support does not reply, you might want to consider posting a complaint on Xolvie in order to bring attention to the issue and try to find a solution.
Related Complaints
Peekviewer Refused Refund After Accidental Subscription Despite 14-Day Policy

Three days ago, a Peekviewer membership was activated by mistake by my younger sibling. My credit card is saved to my iCloud account, so the payment was charged automatically. According to the information shown for first-time subscribers, it clearly states that a refund is possible within 14 days. I...