Upcart—Cart Drawer Cart Upsell

Beware of their fraudulent billing. We recently installed this app and had a 14 days free trial period. Once the free trial period ended, we see they charged us for the usage charges for the past duration when the app was not even installed. Upon raising this issue with their customer support, we had to do multiple follow-ups and after one week, they agreed to waive off these usage charges. However in our latest Shopify billing, we could not see any credit provided for these usage charges. Now we will be raising this complaint with Shopify. Very bad experience.