And other church members, but only hear it in your mind, and see how they react like as if they hate you (spiritual attacks?) what do you do? Leave to another church?
First approach the person.
Matthew 18:15:
But if thy brother sin against thee, go, reprove him between thee and him alone. If he hear thee, thou hast gained thy brother.
If that doesn't work with a witness.
Matthew 18:16:
But if he do not hear [thee], take with thee one or two besides, that every matter may stand upon the word of two witnesses or of three.
Finally publicly.
Matthew 18:17:
But if he will not listen to them, tell it to the assembly; and if also he will not listen to the assembly, let him be to thee as one of the nations and a tax-gatherer.
Additionally the elders.
1Tim 5:17 Let the elders who take the lead [among the saints] well be esteemed worthy of double honour, specially those labouring in word and teaching;
1Tim 5:18 for the scripture says, Thou shalt not muzzle an ox that treadeth out corn, and, The workman [is] worthy of his hire.
1Tim 5:19 Against an elder receive not an accusation unless where there are two or three witnesses.
For a public sin.
1Tim 5:20 Those that sin convict before all, that the rest also may have fear.