I'm a people pleaser and a perfectionist. I have social anxiety and general anxiety.

I am a reseller online. It has been the best for me because of my anxiety has been really bad. I am going to therapy for it and I have been doing well until tonight. 

I made a mistake on the brand of an item that I sold. The person who bought it didn't just nicely inform me of my mistake; they called me stupid and they are insisting I am a scammer. And so I apologize. I agreed that I made a mistake and that I accept the return request. And she is still going to the apps customer service saying I intentionally scammed her. 

And I just can't calm myself down from being accused of this. 

1. I made a mistake and that's something that I'm hard on myself for. 
2. I upset someone even though it was unintentional. 
3. The fact that she is turning this small mistake into something that it's not and won't believe me. 
4. The whole fact the situation upsets me makes me feel like the progress I though I made didn't really happen. 

I know I'm sensitive. I wish I wasn't. I am sorry if this is all over the place but I just need someone to talk to.