You have posted an image where it is mentioned that you have multi accounts. Multi-account cant be considered the maximum of the platform. If you really have multi accounts then they are not scammers. And if you don't have a multi-account then you should prof that you don't have a multi-account. You should provide KYC documents and others for that.
It is mentioned by who? Them lying out of their teeth to simply refuse paying? 
I have only used Dexsport.io ONCE and they are lying thieves. You probably work for them or something. There are A LOT of bad reviews about them online which I missed to read before using them this week.
Their wallets are EMPTY and have no activity either.
First of all, I'll post the BBcode version of the [currently] only image you provide so anyone can see things easier
with that made visible, I'd urge you to edit the opening post with the format and more evidences than what the image above provide us, as logfiles suggested. This board runs on evidences, it'll be very much appreciated and helpful if you can give proper materials to back up your claim for the DTs to tag them [you do aware that you can tag them yourself too, right?] if they're proven to be the wrong side here, because the current evidences you gave is... very limited and didn't give us enough insight.
I will also urge you to inform them [preferably after you edited this thread with proper format] about this thread. Your post on their ANN did not direct them to this accusation thread and they probably didn't know where to address your issue. I can do that for you if you want to [though I don't see why], but I'd prefer to do it after you made this thread "complete".
And lastly, no, I am somewhat sure that shasan is not working for them.