The Catholic Church is the true Church, but not the only church with truths. There is no historical evidence of the Church falling away, and we have God's promise that would never happen. All baptized Protestants are regarded as Christians according to the Catholic Church. Nobody owns the truth.
You can harp on about it all you like, you cannot turn a lie into teh truth. His true church, is made up of all believers form every nation who have received Him and the Holy Spirit whom God gives to all who believe. Your chruch has being persecuting His church since its very beginning and even so today, she is teh ugly sister trying to vie for Christ teh Husband of the ture Bride, and Christ Knows those whom are His no matter where they are. His "church" is made up of spiritualy minded people whom only follow Christ.
But your churches days are numbered
Luk 18:7 And shall not God avenge his own elect, which cry day and night unto him, though he bear long with them?
Rev_6:10 And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?
and your church thinks she has everything
Rev 3:17 Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:
Rev 18:4 And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues.
Rev 18:5 For her sins have reached unto heaven, and God hath remembered her iniquities.
Rev 18:6 Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.
Rev 18:7 How much she hath glorified herself, and lived deliciously, so much torment and sorrow give her: for she saith in her heart, I sit a queen, and am no widow, and shall see no sorrow.
Rev 18:8 Therefore shall her plagues come in one day, death, and mourning, and famine; and she shall be utterly burned with fire: for strong is the Lord God who judgeth her.
I hope you are not there when it happens.
PS. your church does not"own: God He belongs to everyone.