I'm on the wrong tariff for my meter?

I got a new meter installed on 26 November 2020, as my old one was faulty! The old one was a top up meter using a credit key. My new one is a credit meter & has no key, so how do I pay my bill before it gets out of hand? I just have to pay December & January as I got a email from a Bulb engineer (yes they do exist) telling me the meter has gone into safe mode & I would not be charged until the engineer visit. I also have a excel sheet I designed to tell me the cost as I take weekly readings, & they are way out. Do credit meters run on a different tariff that top up meters?
Thanks for any help

Danny cameron

Yes, and a different daily standing charge.
You will need to look up bulbs tariff and S/C for your DNO area

Hi @nikon6966, firstly welcome to Bulb community :wave:

I’ve just sent you an email about your account, as I’ve made all the necessary changes to my system. If you have any other questions, you can reply back to me directly there :+1:t2:

Lou :stars: