Dear Stanley&Branley

Welcome to this forum.
As ex bank executive I will only advice you to read carefully their written proposals and then post in this forum an investigation request.
As far as you write in your post they seem brokers from Swiss banks. In such case they must give you their code number of broker. You may contact with the banks asking info for the specific code number.
In any case DO NOT transfer money to accounts that do not belong to you.
Also from personal knowledge Swiss banks mostly use representative offices to other countries and they do not use brokers.
Read also carefully in main page an article with title "some useful advices".
For any further help post here or send P.M.