No payment received for investment

On the 1st of march I made an investment of R1100 to a company called dmg consultant they said they make money by trading forex and then double my initial investment in to two and pay after 5 working days, but now they no longer answer their office number and their whatsapp number is no longer working what pains me more is that on their facebook page they are still advertising their company and taking more investments, i just want this people to return my money