Apparently they cut a bunch of staff and many offices are by appointment only now. So basically you need to account for this if you are going to file.

Most of the troubles I have had are helping people whom are not technologically savvy and they sometimes don't have a cell phone. Not having a cell phone makes the process extremely difficult because apparently it is just taken for granted that everyone has one nowadays.

You don't need to worry until you are probably 62 which would be early retirement for you. You full retirement would be 67 which just means you get a higher benefit the longer you wait. When the time comes you can always reach out to Social Security and they will explain the process.