What can a person do when they've hurt someone's feelings and you've apologized and explained that you have been under lots of pressure, no response?

The other person doesn't cut you any slack and doesn't acknowledge that you aren't perfect. You had a company wipe out your bank account, they sent you a lot of expensive things that you didn't order and you don't know how to send them back.
Yet the other person seems to only be worried about his own feelings and not that you are going through a big deal in your life right now.
Still, your text messages go unanswered - not acknowledging you - so what's left for you to do?
What can a person do when they've hurt someone's feelings and you've apologized and explained that you have been under lots of pressure, no response?
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