Big discrepancy between the usage graphs and the actual meter readings

Sure, it sounds like it. 
Have you checked your actual meter readings against the records? We have seen one or two accounts which have had meter readings swapped with neighbours - very rare but possible

I am going to start recording daily readings from meter and then check against what the usage says. Amounts seem to be roughly the same on meter as when it was read by ovo I think?! It's just very odd as it's almost 3 times the amount of usage all of a sudden. Probably wouldn't have even checked if they hadn't tried to increase the dd from around 210 to 330 a month! Which, based on the large amount of usage would be right, but we genuinely can't figure out the massive increase 

Check the mpan number too - meter v account 

Mpan looks fine. I've checked on national grid website and our address comes up as the mpan listed on our bill. 

Once you have your meter readings and checked a few days usage @Loubielou the next step might be to switch all power off for a period checking the meter before and after to see that it hasn’t moved. Then I would check each circuit on the distribution board (where your trips or fuses are). That should isolate which circuit is the problem, then check the connections/appliances on that circuit. 

How do i manage to speak to anyone at ovo ? Been trying for the last week no one answering phones and online chat a joke ?

The ovo app shows me using an insane amount of electricity that can't possibly be correct.  I urgently need to get this sorted any one go the phone number or email of the managing director ?

Hi,

Could you grab us a screenshot of what you see under https://account.ovoenergy.com/meter-readings/history/electricity please?

No idea what this has to do with it.

Apparently overnight I've gone from averaging 12.7kwh per day to over 64kwh per day and last Wednesday over 152kwh in one day. 

I think I found it. There’s a discrepancy from the reading dated 8th December 2021 which appears to roll back the clock massively for no apparent reason. From that point onwards, things seem to get messy. A read dispute can probably fix this.

You can’t have the contact details of anyone in OVO’s Senior Management Team. Not only is posting employee details not allowed here, I don’t have them to give you anyway.

Try flagging this to https://ovoenergy.com/feedback 

I agree with blastoise for the most part, @Ovowtf - at some point after the 8th October 2021 and before 8th December 2021, the readings go backwards. This may happen if you’ve had a meter exchange or some issue has taken place. Please flag this to our Support team who can get the ball rolling with getting this rectified. If you raise this via a web chat, you can link them directly to this topic and save you having to explain anything twice!