Hi there, @YogaJourney !
Sorry to hear you’re having a hard time with the situation you find yourself facing.
While we’re not able to confirm if a given store is using Shopify, you can report a store you believe to be using Shopify in contravention of our Acceptable Use Policy here.
If the store in question does prove to be using Shopify this report will be investigated and acted upon internally as appropriate.
Should the store in question not be working with you to resolve any issue with your order and 30 days or more have passed you can contact the payment method you used (PayPal, card issuer, etc) to let them know what has happened with this transaction.