Yes, but nothing novel, and this is a recent development (within the last few weeks).

I wonder if you’ve hit some kind of internal limit. I don’t know if such things exist but I’ve noticed a pattern around how discounts and credits are allocated.

I do feel your pain though. Managing AWS costs can be a full time job itself.

Is it, though? We've been getting a lot of pushback for months, even for things that weren't really completely our fault (and were made worse by the horrible lag of cost explorer), or even for things that were aws bugs. Maybe now it's official policy, but definitely it's been hard to get refunds for a while now. They were throwing tens of thousands of dollars of credits at us to just play with new services a year and a half ago.