Ditto.
Only happened on one retail card, but I had two from that issuer. $15k limit chopped down to $1024 - which is odd, in itself - back in April or so... (My last PIF on it was >$4k, FICO always north of 800).
Someone at Synchrony doesn't know shit about credit algorithms and went nutso slash and burn on a good customer + SYF shareholder.
(Maybe all of that Amazon card exposure, when Amazon was the only retail store open in the whole country, made them really nervous.)
Chase is the other issuer for Amazon, so that might explain yours, too, Rob.