The correct spelling of the phrase "more calling" is /mɔːr ˈkɔːlɪŋ/. The first word "more" is pronounced with an open "o" sound, represented here by /ɔː/, and can be confused with the word "maw". The second word "calling" is pronounced with a stressed "a" sound, represented here by /ɔː/, and can be confused with the word "colling". Correct spelling is important for clear communication in both written and spoken language.