Did you get a confirmation code when you used NETFILE? If you didn’t, then your return likely wasn’t filed, and you’ll need to re-send it.
This FAQ shows how to find out if your return was filed using NETFILE and received by the CRA: https://turbotax.community.intuit.ca/community/tax-topics/help/how-do-i-know-if-my-return-was-filed-using-netfile-and-received-by-the-cra/00/873667