Reminders to submit SA return *after submission of SA return*

Are reminders to submit SA returns in any way related to the submission of the return? Logic would tell one that reminders would stop when the SA return was submitted. In previous years I cannot remember receiving reminders after submission but this year I have, by e-mail and text. 12 days after submission I am still receiving reminders. Is this a quirk or an issue?

Hi profandco Ecclesiastic,
It's possible that you're receiving reminders to file a return because you haven't fully submitted your return.
If you have submitted your return online, please check that the return has been fully submitted and received by us
If it has, please contact us by webchat or phone here:
Self Assessment: general enquiries
To allow us to investigate further.
Thank you.