Sudden change in account balance. Smart meter reads out of line?

Thanks. 

Thanks. That looks like crossed wires somewhere, but if the readings in the 200s are a natural progression from the ones before the 7000 readings appeared, you should be OK. The drop from 7753 to 224 will have raised a red flag for those monitoring smart readings; they should have checked, realized that the 7000 readings were anomalous and probably taken no further action other than to remove the flag, because they shouldn’t have any effect on your bill.

Does billing for the current period now look more sensible? It should show the actual readings used to calculate the balance, the one at the start of the period and today’s. If there are no others shown on the billing page, you’re in the clear. 

If I were you, I’d use webchat to contact the support team and ask them to find out from the metering team what went wrong. If you do find out, please come back here and tell us what they said. 
  

[Bonus tip: with the price cap drop imminent, some customers have noticed that no smart reading is recorded for the first day of the quarter. We don’t know whether this is intentional or simply a result of the data communications system being overwhelmed by the traffic generated by the tariff changes. It means, though, that the September bill is based on an estimate; it will be pretty accurate, but a blemish on the bill nonetheless. To avoid this, users have found that a reading manually submitted on the 1st is used to calculate the bill. If you’re back home by then, use the app to send a reading early on Sunday morning and watch what happens. It won’t do any harm either way.]