Trust crest holdings **** alert

Morning all, I have signed a cession agreement regarding a payment to be received from trust crest holdings. After requesting my payment and have been asked to pay addional 1500 Usd, then after than the company said they cannot release my funds as I need to pay more fees. This requests has been send over and over from them. Please be very careful as there are hidden agendas. This is not normal for any company working via a gmail accounts and requesting fees all the time and not paying clients.