SCSY2.0 and SCSY_dev is trying to scam my wallet.dat

I have all pm from SCSY2.0 and SCSY_dev.. they started asking me to send the wallet.dat, now from one month they dont give me my coins but they have my wallet.dat file of old coin. SCSY2.0 say that slack is the place where i can give my coins but there is nothing of securitycoin on slack and he asked my email but he never replied no more. it is so hard only send me how much i have in old wallet?