The chart illustrates the number of complaints made about a PC manufacturer in four categories — products, delivery, staff, and other — in 1996, 2006, and 2016.
Overall, product-related complaints were the highest in all years, while complaints about other issues remained the lowest. There were fluctuations in delivery complaints, a gradual drop in complaints about staff, and a slight decline in complaints labeled as “other.”
Looking at products first, complaints were at their peak in 1996 with 85 cases, fell significantly to 60 in 2006, and then rose again to about 75 in 2016. Delivery complaints followed a different pattern; they were lowest in 1996 at 22, surged to 65 in 2006, and then fell back to 38 by 2016.
Staff complaints, meanwhile, decreased consistently over the years, dropping from 40 in 1996 to 25 in 2016. Other complaints were relatively small in number; they fell from 36 in 1996 to 23 in 2016, reflecting a gradual downward trend.