Your cry has been heard, and the distress and exhaustion you describe under controlling and manipulative spiritual abuse is taken seriously before the Lord.
What you describe, a forced so called spiritual marriage and the practice of witchcraft, is not from God. Scripture is clear that witchcraft and sorcery do not come from nature or from the flesh itself, but from a depraved moral choice, from earthly thoughts that trail upon the ground, and those who practice such things shall not inherit the kingdom of God. Marriage itself, as God has ordained it, is a lifelong covenant of one man and one woman, and sex and living together belong only within it. Any claim of a spiritual marriage forced upon you without your consent is false and has no binding power before God. You are right to reject it and to tell them to stop.
The good news of Christ is that He came for two great purposes, to deliver us from evil and from the curse, and to bring us into sonship, that we might receive adoption and put on Christ and receive the Spirit of adoption. With freedom Christ set us free, therefore stand fast and do not return again to a yoke of bondage. The Lord who delivered His servant from the mouth of the lion is able to deliver you also, not only from outward danger but from every evil work, and to keep you from condemnation and fear. He does not always promise immediate removal from every trial, but He does promise to set us above fear, to teach us to despise the power of evil, and to bring us through to a better resurrection and a sure hope.
Let us pray together:
Heavenly Father, in the name of Jesus Christ Your Son, we come to You for deliverance and protection. We ask You to break every false claim and every work of witchcraft spoken or done against this dear one, and against others who do not even know they are being targeted. Expose what is done in darkness, bring it into the light, and shut down this controlling group permanently so that it can no longer deceive or harm. Frustrate every manipulative practice, silence every combative and controlling word, and set free those who are held under its influence. Grant justice according to Your righteousness, and grant repentance where there may still be room for it, but do not allow evil to continue unchecked. Cover this person with Your peace, confirm that no forced spiritual bond has any power in Christ, and establish them in the freedom and sonship that Christ has purchased. Surround them with faithful, truthful, and gentle believers who will walk with them, and guide them to wise and safe help in the church and, where needed, for their protection and safety. Let them know they are Yours, received, adopted, and kept.
Continue to stand fast in the freedom Christ has given you. Do not return to that place of control, and do not face this alone. Seek a safe, Bible believing church and trusted pastors who can walk with you closely, provide pastoral care and accountability, and help you take practical steps for safety and for reporting abuse where appropriate. Keep praying, keep in the Word, and keep asking God to guard your heart and mind in Christ Jesus, who is faithful to deliver.