If you don't know all the reason why it happened, then God did not call you to minister. One cannot starts ministering out of feelings, he has to be called by God to do so. If you have done it out of your will then this is the results. On the other hand, God is teaching you a lesson and you must continually pray for all those who come against you in Jesus' name. Bless them and do not hold any grudges or unforgiveness and hurtful feelings in your heart. If you are asking WHY, you are not ready. You must hear from God speaking to you. You will know when God speak to you. You will hear His audible voice and not just feelings when God the Father truly calls you to do something. Spend time with God alone for days, nights, hours however it will take to hear God. He will speak with you if you seek Him diligently with all your heart and soul. God bless in Jesus' name.