forexmarket Refused to credit my account

i need help with this forexmarket broker, i made a ddeposit to my acc-283750 since december-2017 using bitcoin but was not credited, i complaint to thesupport time without number but uptil now they were unable to credit my acc despite the promises to credit the acc, it is almost four months that i had been writing to them but could not avail.this act doesn't speak well of them.