1) You fail to understand the difference between prayer and worship. When you have dealt with your ignorance we can resume an intelligent discussion.
2)I don't know what the RCC (Raving Calvinist Cult) believes or not, but the Catholic Church does not ignore the Old Testament. It does recognize that it was fulfilled in the Resurrection of Christ and replaced with a New and Everlasting Covenant. It now provides clarity and context to the Gospel of Christ.
Please show us the Scripture where anyone is instructed to pray to anyone other than God.
Rome errs big-time by teaching its members to disobey God's word.
"Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God." -- Philippians 4:6
When you have dealt with your ignorance we can resume an intelligent discussion.
Locate your breath and hold it.