Who comes to see atticus at the beginning of the movie? why does atticus tell scout not to call him next time?

Mr. Cunningham brings some nuts for Atticus and he's embarrassed because he can only pay Atticus with nuts. Atticus does not want his clients, who are mostly all poor, to feel embarrassed about how they pay him for his services which is why Atticus tells Scout not to call him

Cis the answer for the question you asked

Ithink that c would make the most amount of sense.