Who do i contact about a parole violation and the parole officer not doing anything about it?

i was threatened by my ex who was on parole at the time, i managed to get a restraining order against him. during his parole he was also arrested for larceny same reason he was out on parole in the first place. his parole officer let him off parole knowing all this, what can i do? i want to report the parole officer and make sure my ex stops getting away with all the crimes he has committed. The department of correction here in CT has an e-mail where you can submit what you know about an inmate I wrote to them about my concerns and everything i've known he's done, this was while he was on parole and yet he still was let go.