Smart meters. Has anyone had a bad experience?

I still have an old fashioned gas and electric meter which I read diligently every month and send the readings in online.

Just recently, I bought a Ninja oven which we all know uses much less electricity. So, of course, my energy readings have been much lower.

Problem is, my energy company keeps saying I have a faulty meter which I’m sure is not the case.
They probably think I’m fiddling it of course, which I am not.

Now they are sending out a meter reader to check it this week.

I know they want me too change to a smart meter but I don’t really want one. Have heard bad reports about some.

Be interesting to see what meter man says on Thursday.