Do not trust
If it were possible, I would give zero stars. I registered with them in January, and by May, I got fed up waiting, as I did not get even one chance/one cancellation to book my test. When asked why it takes so long, all I got was that the centre I need is very in demand. Then I went online and was lucky to book my test for the 21st of November for the wanted centre. It is far, but at least I had a date. Then suddenly, the same evening, I am getting a message that their system has secured for me a test on 17th November for my second-choice test centre. There was no way of contacting them to stop this change, the phone number that delivered the message was all AI, as well as online chat. Over email, they tried to convince me they did not change my booking (I was supposed to be notified that there is an available test and have an opportunity to take it or decline it). As a result, I had the test booked for the day and place I did not want. I cancelled my registration with them and requested for refund as per their policy (if the service is not delivered within 4 weeks). I was promised the refund, but now, when I am trying to email them, I get a message that my emails will be redirected to another server, and I am getting nowhere with them. It's just a big scam.