Permission to use the song

In order to ensure I didn't violate any copyright issues, or just annoy the producers of Call Me Maybe I decided to email the record label. After finding the producer of the song (Josh Ramsay) but no way of contacting him, I then discovered the record label 604 Records was the label for the song. On their website I managed to find an email address hidden away with info in the title. Assuming this was the address most of their questions get asked I figured it made sense to send mine to that address. In the brief it states that providing I have evidence of contacting the producer of the song I can use it in my production.