They kept charging me for years. I eventually noticed, and asked for a refund on the completely empty, completely unused account which was being charged to an expired and canceled card (something I didn't even know was possible until this incident).
Support said no, and offered a discount if I wanted to use Shopify in the future. I said I'd have to resort to a chargeback and I'd let my credit card company see if they agreed with my interpretation of the situation or not. The head of support literally yelled at me the moment I used the word chargeback, revoked his previous offer, and said they had no need to return my money, even though they hadn't earned it.
I wound up in touch with their VP Revenue who agreed that he didn't want to take any money they hadn't earned. But instead of refunding my money, he just dropped contact with me and never responded again.
If they were to respond to this publicly, they'd say I was angry with them. And that's true. I became angry after their head of support yelled at me. I still can't believe that happened, it was the worst customer service experience of my life. My blood pressure goes up a little just remembering how I was treated.
So basically, I'm glad you're happy with them, but they stole a couple hundred bucks from me and lied about their intention to give it back. My experience makes me believe that anybody who had good experiences is, almost certainly, just lucky. That or I'm in the .001% of supremely bad luck.
If I'm truly in the .001%, their vp revenue can circle back and give me the money he promised (I'd be easy to identify on their side, since if they never yell at customers, and never lie to customers, then it should be super-easy to remember a time that they yelled at and then lied to a customer).