Is this an estimated or actual gas reading?

Today, the 7th of June, I looked at my usage figures for the 6th. I used £1.36 of electricity and somehow used £3,605,638.37 of gas in one day. If I could post the screenshot I would.

I called customer support in South Africa and they hardly speak or understand English. After 4 attempts to tell them my postcode and telling them what the app and website was showing, Bulbs expert opinion…”There must have been an error” :rage:

UPDATE: MY GAS METER IS DEAD. NO DISPLAY