I have been with British Gas since 2019, had smart meters installed and paid by direct debit. Every bill I received said that my payments are on point to cover my usage so I thought nothing of it and continued to let my direct debit continue out of my account each month. I have recently changed supplier and got a bill of £900+ from BG saying I was in debit. When querying it, it turns out that there was a system error and my quarterly reviews hadn’t been carried out. I have permission for them to speak to my mam on my behalf as I work during the week and they have promised her at least 3 calls backs, two weeks later we haven’t heard anything and when she calls to ask what’s going on, they’re now refusing to speak to her. I finish work at 4:30pm everyday and their wait time on a call is 35mins, since they close at 5pm, I can never speak to anyone. I have been left with a debt of over £900 through no fault of my own and have no one I can speak to about it. I am absolutely disgusted by the service we have received and I’m a loss with what I’m supposed to do now to resolve this issue. This company is expensive and their customer service is shocking