[NaS]

For the "manual" insert, you use %e in format which isn't a valid specifier. I don't think this will cause it to fail though as it will just pass "e" instead of the string, however it will mess up the other specifiers because of the order. Just saying.

For the prepared statement, isn't it required to prepare it for everytime you want to use it?
So basically prepare, bind, execute and close it locally? Though I'm not sure about that but worth a try (but fix the following error first).

You misspelled garageOwnerName when preparing the statement and the other query (garageOnwerName).