Welcome to r/GooglePixel, the (un)official home of #teampixel and the #madebygoogle lineup on Reddit. Get support, learn new information, and hang out in the subreddit dedicated to Pixel, Nest, Chromecast, the Assistant, and a few more things from Google.
If you're having issues getting a problem solved with Google Support, u/dmziggy's ticketing system can help you get it escalated.
This post by u/jaykresge may help to explain why you're still waiting for the latest update, and why carriers may be the reason.
NOTE: You must be signed into your Google account to view bugs on the Google Issue Tracker. Also, a reminder to users visiting links to the Issue Tracker: star the issue. DO NOT COMMENT unless you have evidence to share.
For more information on all of the devices in the Made By Google lineup, and other Google-related products, check out these subreddits:
Pixel 4a 5G [Hardware mod] The Pixel 5a's battery fits in the Pixel 4a 5G, including the BMS (after modification) (self.GooglePixel)