Absolutely ridiculous customer service. I topped up my key 6 times, none of which went through onto my meter. I checked and nothing was wrong with my key. An engineer came to change the meter to a smart meter as the previous one was old and faulty and told me to ring customer services to transfer the money from the receipts onto the new meter. I rang up and they refuse to give me back the money I have lost, while I have the receipts - they claim that on their system “the money has gone through” even though our meter did not show this. It was £250 in total! Thieving scum of a company.