I could bee wrong, but I don't think that is possible. Someone must have renewed it without your knowledge. Like someone who manages your IT; employee or third party.
A common way I have seen customers get confused by this process is when using co-termination (which is the default) and then buy more Meraki kit. This adds your licences pro-rata to the existing system extending the expiry date.
You can see if more licences have been recently purchased on the licencing page.