Green reviews: add your feedback

I decided to switch to Green.Energy for the same reason as everyone else: cheap tariff, but my experience has been quite disappointing.
I am not going to question politeness of advisers at web chat, as the one I spoke to was polite. Politely asking me about my bank account details to update my switch but when challenged about non-secure means web-chat was providing, he backtracked saying I misunderstood him, he meant I needed to contact the company on the phone to do so. I am not sure how did he want to update my switch then, since he meant I should have done that on the phone.
The reason I needed assistance, was due to allegedly invalid bank account details. The Green.Energy adviser could not confirm as to what was wrong with the details I had provided, as he said bank account details were not shared with their employees due to security protection and yet I was asked to provide my details on the phone/ online web-chat.
I have done a bit of research and found out that in instances when mandate is invalid, both parties would be informed of that but I was not informed by the Gocardless (the company dealing with DD payments for Green.Energy).
Following the issue with my bank account details, I received emails informing me that my account is at risk of running into a debt if I did not update it; I wanted to do it on the App and was initially advised I could do that but the App for Android mobiles was not functioning at all and the website was completely useless in this regard, which means I was not able to update my bank account details and there was no way I was giving my bank account details through non-secure means to Green.Energy employees since Gocardless deals with all the information. I am an adviser at CAB and have assisted clients who paid for someone elses bills because of merely sharing bank account details to naively believe that whom I share bank account details with is irrelevant.
Few days later, I received an email form Green.Energy: "Following on from your request we have cancelled your switch to Green". The only problem was, I did not cancel the switch, so emailed the company in response to that but have never received any response. When made a complaint, I was advised the system mistakenly used a wrong template. I requested to receive the correct reason for cancellation of my switch; have not received anything either but instead received an email from Operations Director accusing me of providing misleading information about my bank account details.
I, then decided to leave a review on Trustpilot, the review was immediately reported by Green.Energy and removed by TrustPilot pending an investigation. My LinkedIn account was also viewed by someone from Green.Energy. What was interesting, a number of positive reviews about Green.Energy suddenly appeared on the same day. The content of those reviews coincidently referred to everything I had issues with.
Unfortunately and regrettably, as the tariff is still the most competitive, I simply do not trust the company. I wonder if any of you who decided to switch had an issue with bank account details.

I did contact TrustPilot. So far no response from them. My review is still offline.
I have also seen a review in which a person complained that Green.Energy set up three different DDs. Something is obviously not right with how the company handles personal information.
In terms of bank account details; they do not deal with bank account details-Gocardless does and thus those details are not accessible to Green.Energy either, that was also the reason they were not able to confirm what was wrong with my details.
The person on the web-chat should be trained accordingly and either they cut corners because of questionable practices of the company or the person requesting personal information does so for their own personal gain.
It can be resolved by re-joining Green.Energy (but it is no longer my intention to be their customer) but that was not the point of my message. The point was that their actions are in breach of data security regulations and I wanted to warn those who might be asked by the company for bank account details as they might end up with more than one DD to pay.