No there's no use beating a dead horse, but there is one thing left unaddressed. I am assuming "calling on" means calling on in prayer since that is the only way to call upon God. Christ taught to pray to the Father. Joel taught to pray to Jehovah. You believe Paul teaches to pray to Christ.
Do you see the contradiction?
Some believe that Jesus Christ is a triune personality; angel turned man turned spirit creature.
Not so, Jesus Christ is the Triune God: Father, Son and Holy Ghost.
Every knee shall bow to him in worship: Jesus Christ is God.
Every knee shall bow: yours, mine, every knee,
"Therefore God has highly exalted him and bestowed on him the name that is above every name, so that at the name of Jesus every knee should bow, in heaven and on earth and under the earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father." - Philippians 2