when I read this: " it seems my money has been stolen from Coinmama " I was shocked, I was shocked because I planned to use coinmama to buy more bitcoins, I can not believe they are also scammers. Dude, you did very well to report this. I would have taken a lot of money from my bank account to buy bitcoin on the coinmama site and probably would have lost that money. I'm very shocked and I can not believe, if I had not read your post I would have also lost a lot of money.
Why are you shocked? The first sign of shady activity is when an exchange hides itself behind
whois protection supplied by its domain registrar. An exchange that isn't planning to mess with its users and complies with all rules within the jurisdiction they operate in won't do such a thing. Easy way to detect bad actors is to check whether or not they use whois protection. It helps you avoid 90% of the bad actors in an instant.
Coinmama has been around for a while with mixed user experiences. It doesn't seem to be an outright scam, but I wouldn't recommend anyone to test it either. It reminds me of Hitbtc. Half of its userbase doesn't experience any problems, and the other half experiences nothing but problems and even think it's a scam.