Correction please.

# I will not be able to join the meeting.
# He won't come to office tomorrow.
# What did I do? why am I getting this type of problem?
# I have seen a good movie.
# I will see the xyz movie
# Until now I haven't been not able to write a article without any mistake, since I'm learning English.
# Did you already think about how your mother feels when your mother can't find you on the phone?