Hi Mike,
 
No, MitraChain is not a licensed broker, and the big red flag with them is that they use AnyDesk and TeamViewer. 
Any broker using these remote control softwares means they want access to your computer so they can place trades on your account. After they cause you to lose your money, they claim it was you who placed the trade. 
They list no address or phone number also, which makes them suspicious. 
How did you find this broker?

Speak with your bank / credit card company about a chargeback. 

Thanks for the info, does not sound good for me.
I am in South Africa and came across an article promoting them and their fantastic results, so I went onto their website.
I have sent them an e-mail asking for their proof of registration.
How do you suggest I get my invested funds back from them or withdrawn?

On their website they show a map of the London area and give a telephone number 44203 807 4255

Is there a time limit on bank charge back?