Sorry you had to wait on hold. This is probably one of the busiest days of the year for MS. Hope your wait wasn't too long.
I started calling at about 2 minutes bfore 9 am Eastern and was able to get right through after a few calls (the first few said they weren't open yet, LOL).
I'm very glad my reservation is now complete. Also very glad that I can see it on the Members' website whenever I start worrying about it!
Best wishes -