The Pineapple Inc

I had been working in regards of my IOS project with THE PINEAPPLE INC.
They make us fool by showing their location as London(69 Lawrence Road London N154EY
) which is a ormal residence there - I myself visit the place for confirmation, they are from a city of Pakistan. echelontechlab.com is their basic site containing the correct address.
They scammed me to take $2500 and not a single code has been provided,even now they are black mailing me to pay more,otherwise I will loose my investment of money and time.
One of their employee is with me on skype. He told me all this(on the condition to not public his name).
Murtaza wasif ,Ahmer hasan and Safdar Abbas are the lead players to do scams not only with clients but they didn't pay to their own employees from last 2months and 12 days (jan,13,2016). A case is also under process in National court of their city.
Please be aware of these 2 websites thepineappleinc.com and echelontechlab.com