I wonder why the people who come here must have the same voice as you. Could it be that if I say some of my own opinions, I will be considered to stay against you and maybe a representative of one of the brokers? So what is your motive to define me here? Am I blocking your way to chase back the money? Or you are creating the smokescreen and trying to influence others to not believe in good voices here, aren't you? Or you are afraid if there are some excellent points, you will not be able to threaten the broker to refund the money, aren't you?
You look great at making future clients aware of such cases. There must be a lot of people who are grateful to you. But what you mentioned is actually a widespread phenomenon. For example, when you put a fixed deposit at the bank, the banker wouldn't ask you why, but the sales will definitely ask you why you want to take it out, and they will suggest you not to take it out and continue to earn the interest. That is a common way for all companies to keep their clients and sales.
You talk somehow, like many people always want to rip you off. I am curious how much money makes a broker want to threaten you; somemore, they are willing to refund you your principal. In fact, it is a fundamental way to communicate with clients thru the phone, isn't it? What can a phone call threaten you? Nowadays, the bank will call you for verification even with some significant transfer amount. What are the reasons you think a phone call is not a formal and safe way? Even if you answer the phone and tell them that the result of the processing needs to be notified in writing, that's fine. Or what are you guilty of?
You are trying to play on the river bank, but you worry about wetting your shoes. You are better to contact the broker to settle your problem instead of making a war of words here.