data base of consumers: This is the most serious limitation for any direct marketing effort.
Limited electronic system of payment: In the US the credit card number is used as a means of making payment for any directly marketed product. There is no need for verifying the signatures of credit card holders. Telemarketing and TV home shopping channels are popular methods because of this system of payment.
Reluctant customers: Most consumers are suspicious of manufacturers because of a history of deception…
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