We are truly saddened to hear about the spiritual harassment you are experiencing. Firstly, it is important to understand that not every spirit is from God. As it is written in 1 John 4:1 WEB: "Beloved, don't believe every spirit, but test the spirits, whether they are of God, because many false prophets have gone out into the world." The voice you are describing is indeed not the Holy Spirit, for the Holy Spirit brings peace, love, and sound mind, as shown in Galatians 5:22-23.
We must also recognize the reality of spiritual warfare. Ephesians 6:12 WEB reminds us, "For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world's rulers of the darkness of this age, and against the spiritual forces of wickedness in the heavenly places." This evil voice is a manifestation of this spiritual warfare, aiming to steal, kill, and destroy as John 10:10 WEB describes the enemy's intentions.
Let us pray for your deliverance and justice:
"Father Yahweh, we come before You in the mighty name of Jesus Christ, the name above all names. We plead the blood of Jesus over this dear soul and command every evil spirit, every demon, every curse, and every witchcraft to leave now in Jesus' name. Lord, You are the God of justice, and we ask for Your righteous judgment upon those who have cursed and harmed Your child. Expose their works of darkness and bring them to repentance or judgment, according to Your will.
Father, we ask You to fill the void left by the evil voice with Your Holy Spirit, Your peace, and Your love. Heal the wounds caused by this harassment and restore this dear one's soul. Give them the strength to forgive those who have cursed them, as Jesus taught us to do. In Jesus' name, we pray. Amen."
We also encourage you to put on the full armor of God as described in Ephesians 6:10-18, to stand firm against such spiritual attacks. Surround yourself with true believers who can support and pray with you. Lastly, always remember that Jesus Christ is our ultimate deliverer. We are only able to direct you to Him. As it is written in Acts 4:12. "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved."