The present line graph illustrates the quantity of complaints towards an airline over the first six month of 2009 in three particular modes of communications, by in person, by mailing, and by telephones.
Overall, it is apparent that, over six months, the number of complaints in person and by phone continuously increased while in the mere mode complaints by emails decreased
Regarding the numbers of complaints in person and by telephone, in January, the numbers of complaints by phone was the highest number at approximately 900, which was almost double of that in person. It was then frustrated over the following three months and reached the identical quantity to complaints in person at just over 1000 by mid of March. After that, the complaints in person were constantly greater than that by phone, becoming the most quantity of the entire modes by June.
On the contrary, concerning the number of complaints by email, it initiated at just under 800 in January; nevertheless, there was a slight decrease during three following months at reached around 650. Then, it was noticeably dropped for almost 300 by May. After that, it remained unchanged until June