Smart meter wrecked our boiler but E.ON won’t pay

We just wanted the money to pay to have the circuit board repaired

I am having the most absurd argument with E.ON after the power firm's smart meter installation wrecked our five-year-old gas boiler and it then refused to pay for the repairs.

It started when we moved our gas and electricity supply to E.ON in April. Our new tariff required us to get a smart meter for each and so in August E.ON's contractor, Morrison Utility Services, arrived to install them. But when it turned the electricity supply back on after installation, our previously working boiler would not restart.