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Source-linked reports: Amounts and outcomes come from the original reports and linked replies.

Otherabumarkba-accidental-credit-purchase

abumarkba: an accidental credit purchase and a refund request.

abumarkba (@abumarkba) tells Cloudflare he accidentally purchased some credit, found no refund option in the billing settings, and asks for a refund.

What happened

Reported cause
Unknown
Incident date
Date not recorded
First reported
2026-10-03 18:13 UTC
Billing outcome
Request submittedAuthor-reported
Case progress
Not established
Public Cloudflare reply
Not linked

Latest reported outcome

The author requests a refund and says he is waiting for a reply.

View this update in the timeline

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports the charge

    Read on 𝕏

    The author says he accidentally purchased some credit, checked the billing options but found no way to request a refund, and asks Cloudflare to process one.

    abumarkba

    @abumarkba · Original 𝕏 post

    @Cloudflare @zatlyn Hi Cloudflare, I accidentally purchased some credit and I'm requesting a refund, I've checked the billing options but there is no option available to request a refund, can you pls help me to process a refund. I'm waiting for your feedback. Thank you
Durable Objects

Jiuhong: a vibe-coded Durable Objects bug, a $600+ overnight bill and a reported 80% account credit.

Replying on X in the shmily7 thread, Jiuhong (@indiehacker9527) says a bug from vibe coding in Durable Objects produced a bill of more than $600 overnight a few months earlier. After several rounds of negotiation stressing system defects, he says 80% was returned as account credit for future charges rather than to his card, that Cloudflare promised product improvements, and that he also received a startup credit package.

Author experienceDurable Objects +2

Packing always-awake Durable Objects into Containers to cut duration cost

Robert Chandler (@bertie_ai) says keeping 1,000 Durable Objects awake costs $4,050 a month, and that he ran the same 1,000 for $22 a month by pooling them inside Containers with workerd; the thread covers why, the durability trade-off and when real Durable Objects are still cheaper. The figures are the author’s calculations, not a bill.

Workers

RetainDB: a reported $36k bill from a queue loop with 81 users.

Reddit user alameenswe, building RetainDB on Workers, KV, Durable Objects and Queues, reports a Cloudflare bill of about $36k for one month with 81 users; the post body says $35,000. He attributes it to a queue consumer that re-queued async writes, 12 unbatched Durable Object writes per memory write and a kv.list() authentication fallback.