Call & hangup. I'm from Minneapolis MN, and there is no such organization as St Mary's Prayer ministry or ministries.
The Basilica of St Mary is not ever called "St Mary's" but "The Basilica," and all of its programs are "The Basilica's outreach," "The Basilica Choir," etc. They have a prayer line but NEVER would they do this sort of calling!! And I checked - this is not the spoofed church phone number.
There is a St Mary's but it is a junior college or a nursing school -- only prayer is at midterms & finals!
The street location of the phone number is a light ìndustrial area. No traditional churches within 10 blocks; a storefront church could be up a few blocks but not on this block.