Non existent Smart Meter Readings

I joined octopus at the end of June having purchased my first house. They are my first energy supplier.

I requested a smart meter but they didnt have any appointments and i only set up wifi in my property yesterday.

However i have had a bill for june and july claiming they have taken useage readings for my smart meter. And my app shows weekly useage.

I sent emails on the 18th and today but have had no response.

What could be going on?