Can somebody tell me how I opt out of this

Can somebody tell me how I opt out of this group. I don’t pay for it and I then a church group and I just don’t want to get any more texts or feedback from you guys no harm it’s just that I want a different path how do I get this off my phone

You guys have a lot of knowledge and I have totally delve into that for the past six months but I just want to not get any more messages from you guys

Menu -> Settings -> Delete Account. Then delete the app like you would any other.