If you signed an agreement with the grocery store that says they will ban you with no refunds for doing $FOO, and you do $FOO, then you can't expect any sympathy when you get banned, now can you?

In any case, your analogy is broken, because this is a monthly subscription, not a once-off purchase: when you pay for a month of subscription and then get banned, you don't expect to get that month's payment back.