Locked out and no functional customer service. useless company.
I have been locked out of my account for over 3 weeks because they changed the authentication and I don't have the same mobile number I had when I signed up years ago. 
They only reply by email every week when I keep contacting them and keep telling me to use the chat on their website, but I have had the chat box open every day all day for weeks and no one ever answers on it. They keep insisting I just keep waiting and there are long queues but I don't know how I can wait any longer when I have been trying for 3 weeks!
They refuse to call me or help at all when obviously there is an issue with their chat not working since no one ever answers. I now have to just take out all my money cash and leave the bank account as it is completely useless and there is no working function to contact them, no phone numbers or other options. All I need to do is update a mobile number and they've made it this impossible task and I can't use my account at all now. 
Completely useless as soon as you have an issue with them... would never use them again!