二進制的欺詐活動Deriv

我有761 $Deriv交易帳戶，現在在帶上證明我用朋友卡付款後，他們決定向我寄回這張收據，因為他們承受了很大的壓力，說他們只能退還我$ 100。請問如何起訴這家公司。他們是欺詐的。看到我使用了我的朋友帳戶後沒有拒絕我的付款，立即我想提現現在問我有關我使用他們提供了證據的卡的人。現在只退還100美元

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FRAUDULENT ACTIVITIES OF BINARY DERIV

I have 761$ in my deriv trading account and now after bringing proves that I made payments with my friends card, they decided to send me this receipt after much pressure on them stating that the are refunding me only $100.please how can I sue this company.they are fraudulent.the didn't reject my payment when the saw I used my friends account, immediately I wanted to withdraw the now asked me about the people I used their cards which I provided evidences.now the are refunding only $100