Webhook receiving twice, only one active

I have a single webhook set up but am receiving two similar payloads in my callback.

When listing my subscriptions with the endpoint

restapi/v1.0/subscription

I see my single subscription with ID:

f23ba2df-b743-468e-8b68-0ead40791e0a

with a single event filter:

/restapi/v1.0/account/316936004/telephony/sessions?direction=Inbound

However, my endpoint receives this payload, and another at the same time from subscription ID:

08abe61a-1f24-4fbb-a83d-f05ca9f1c68c

I probably did set that webhook up at some point but it has since been deleted and no longer shows up in the subscription list, nor can I query for it or delete try to delete it again with the subscription ID directly. The response I receive is

Resource for parameter [subscriptionId] is not found

Is there something I am missing?