In 2020, around 5000+ orders were not pushed to production due to the lack of funds. Some of these were canceled and refunded or disputed through customers' banks.
Some customers are still reaching out to either follow up on their order or ask for a refund. Here's a guide in handling an abandoned order.
How would you know if it's an abandoned order?
Order is over 6 months and still not shipped in Shopify
Order can be found on this LIST