Retainful Email Marketing, SMS

This app is a complete RIP OFF and they keep taking money after you have removed the app.
Their system failed over the biggest sale weekend EVER and I lost tens of thousands of dollars in sales and couldnt even access their system.
YET NO COMPENSATION OR APOLOGY
I have asked for a refund and been denied, so we moved to the free plan and moved away from the program altogether 3.5 weeks ago yet they take another fee from me,
They can NOT be trusted and are dishonest