Charged £520 by Smartli and not refunded

[HarryO]

Hi guys, I know this is on the shopify site with my question but I'm not getting anywhere with Smartli

When I made my store I thought I'd try a free trial with Smartli as it was a suggested App, a few minutes later I was charged £520 for their Premium Yearly subscription (Definitely not what I signed up for)

I immediately contacted Smartli and spoke to an advisor, I cancelled my membership and requested a refund as I haven't used their services, nor was I aware I ever clicked on a yearly subscription.

Smartli 2 days later have responded "We're sorry, we can't refund yearly subscriptions, see our terms"

This amount of money they've taken would take me months to recover, I won't be able to use their services as it didn't sync with what I needed, nor would I want any further interaction with their company. Has anyone had a similar problem with Smartli? I cannot see how it's justified to refuse a payment a customer didn't know they made, nor has the customer used any of their services.