I used a service called FairShake - https://fairshake.com/ which is an arbitration service, and you can use this to get their attention.
But my income from my store is volatile anyway, so large amounts out of nowhere is normal for me. PayPal doesn't understand this though, so I ditched them. Never got my funds back, and I'm still fighting to get my funds back a year later.
Support is an actual joke. You get forwarded to different support staff, and when you reach a human, they can't help and are woefully unprepared to sort out your situation.
If you keep any funds in Paypal, they will steal them sooner or later. There is no recourse.
Depending where you are and your revenue, use an acquirer or local processing partner directly. Integration will be a little more painful, but with many benefits; cheaper and human support. In NL Mollie never failed me. I have used Ogone as well; they have been taken over a long time ago, but the support was still excellent 5 years ago.
1. When we (we didn’t know) were using it 15 years ago we were making well over a million/year in the gaming market and they locked our money for no reason. If you have to buy inventory (which we did; our profit margin was ~10%) as a startup, which we were, this can very easily kill you. And you cannot reason with them.
2. When I tried to cancel my business account (20 years old) a few years ago, it took 2 years and 100 telephone calls and emails; they said I could not cancel it because my company still was trading. They added (somewhere in 20 years) the wrong company number to the account (not my company; not sure what abuse and hell I could’ve caused these people as companies are held to standards over here). After 2 years of phone calls and emails, the last email I received was ‘sorry, but you cannot use PayPal anymore and your account has been deactivated because your company seems not to exists’. It would be hilarious if this was a 2 person startup trading a few million$; instead it’s a 31k employee and 76b$ asset company and a complete shitshow. Not sure what they do all day besides counting dollar bills. No one can be proud to work there anyway.
Stripe seems to rapidly go there now. Anyone up for starting something that makes this payments stuff fun and human again? I have the contacts.
Send a written demand for the balance, possibly with help from a lawyer. Don't expect them to resume servicing her account, but I guess you could ask for that too. Transfer money out ASAP, always.
Then you can gather information at your leisure and address the problem slowly and thoughtfully.
Maybe raising prices is a profitable first step. Even if there’s little correlation.
Good luck.