From the very beginning, I've had nothing but trouble topping up. Mistake after mistake. Customer service is a pile of steaming turd. I've been charged £25 for a Power Up I've never received or even requested. I topped up £25 which was unsuccessful on the app, which took 2 months of phonecalls, emails and livechat to get back. I'm currently sat here with no electricity supply, and the customer service and all other ways of contact is down. The stress this has caused me is unreal. I would definitely recommend steering clear of this cowboy company. I will be switching as soon as I can.