if you think that your bill is wrong, you should first:

a. contact the local credit bureau and inform it of the billing error.
b. complain to the better business bureau.
c. contact your state consumer protection agency.
d. notify the creditor in writing within 60 days after the bill was mailed.

they say that a. is wrong

The purchasing agent for a company that assembles and sells air-conditioning equipment in a latin american country noted that the cost of compressors has increased significantly each time they have been reordered. the company uses an eoq model to determine order size. what are the implications of this price escalation with respect to order size? what factors other than price must be taken into consideration?