MGL gas bill paid online but still not updated

[MichaelDrew]

Man, that sounds like a major hassle! Dealing with utilities can be a real headache sometimes, especially when you've already paid up but they're still sending you reminders like it's overdue.
I'd say keep bugging them - persistence is key! Try reaching out to MGL support again and keep pushing until you get a proper response. Sending over transaction receipts and bank statements was a smart move, so hopefully, they'll sort it out soon.
Oh, and if you're ever looking to switch things up with your gas supplier, I stumbled upon this company that helps businesses find the best deals. Might come in handy if you're fed up with the runaround: smarterbusiness.co.uk