Was moved to Shell from Green via SOLR process. Closed account at end of November with final reads due to the sale of the property. Once Green balance was credited, the final bill was deducted and the remaining credit refunded by cheque. Super smooth and a happy customer. A few months on they are now demanding the cheque amount back, hassling me with daily emails to make payments and set up direct debits for a closed account. When I speak to Customer Service they tell me I owe nothing, but their collections system keep hassling me. You can't get through to collections, the call volumes are always too high. No wonder if they're doing this to other customers, which they are as I can see from the reviews. To top that the emails are now threatening to damage my credit rating unless I pay an amount I do not owe. An absolute disgrace. Automation is no excuse for incompetence.