This guy is at fault of course but interestingly the DigitalOcean terms of service suggest this should not have happened. The terms repeatedly use "terminate" and "suspend" to mean delete / disable, with regards to payments:

    Arrearages

    3.3 Payments not made within ten (10) days of invoicing will be deemed 
    in arrears. For accounts in arrears. If any amount is more than ten days 
    overdue, DigitalOcean may suspend service and bring legal action to collect
    the full amount due, including any attorneys fees and costs.

    Suspension for Nonpayment
    
    3.4 DigitalOcean may suspend some or all Services to User for failure 
    to make timely payment.

That seems to suggest they would have suspended his services for non-payment, not terminated.

https://www.digitalocean.com/tos