eBay/Paypal were one of the worst when they were merged. It was so bad I wound up having a new account every 6 months or so. I learned that when they started asking for personal details your chances of being reinstated were nearly zero. The lesson was I had an acct suspended, and they asked for DL, then birth certificate, then a lease, then a power bill, then a phone bill, every time I gave them the document they asked for something else. Then finally they said they needed my passport. I said I didn't have one, suddenly THAT was the only thing that could solve this, and I understood that this was just the plan. They keep asking for different things until you can't provide it or the info they have is wrong and they'll never believe you.
This happened to me in college. They never refunded my $7k balance. It was devastating to me at the time. The experience has played no small role in me becoming a cryptocurrency believer and advocate for the unbanked.
Very similar thing happened to me with LinkedIn earlier this year. Account disappeared, never given a reason - I only used it to interact with job listings.