Much to my surprise I just received a renewal offer email for my membership, despite it already being renewed a few weeks ago as a part of the whole “whoops processing” kerfuffle.
In checking my membership (to confirm that I did not renew) I see that my renewal date matches up with when I signed up, not when premium started last year.
So can you check the process that is sending those emails, and the one for renewal dates? Not sure that things are all that accurate there.