I tell everyone this. Every time a customer is abusive or aggressive in any way, document it. Make incident reports. Include the customer’s name in the reports, even if it’s just the first name. You should print up copies of their receipts every time they’re mistreating anyone. Even better if multiple partners are filing incident reports of the same customer. SMs/DMs can and will sweep things under the rug and the customers will continue in their ways. Document. Everything.

Agree with everyone here. File an incident report and write down everything the customer says and does. Go above your manager to your DM after you've got few incident reports filed or contact the ethics and compliance hotline

if this Caren is that bad, and you can provide proof of the abuse ie. incident reports then you should bring that to corporate. like call them up and tell them what happened

Wtf? Is ur sm and dm good? THey should deal with the Karen then.

You and every other partner at starbucks are well within your right to refuse service to any customer if you don't like the way they're speaking to you or feel unsafe engaging in a conversation with them. If you need to you can take the issue up to your regional director or partner resources.