Section 2(7) "consumer" means any person who (i) buys any goods for a consideration which has been paid or promised or partly paid and partly promised, or under any system of deferred payment and includes any user of such goods other than the person who buys such goods for consideration paid or promised or partly paid or partly promised, or under any system of deferred payment, when such use is made with the approval of such person, but does not include a person who obtains such goods for resale or for any commercial purpose; or (ii) hires or avails of any service for a consideration which has been paid or promised or partly paid and partly promised, or under any system of deferred payment and includes any beneficiary of such service other than the person who hires or avails of the services for consideration paid or promised, or partly paid and partly promised, or under any system of deferred payment, when such services are availed of with the approval of the first mentioned person, but does not include a person who avails of such service for any commercial purpose. Explanation. For the purposes of this clause, (a) the expression "commercial purpose" does not include use by a person of goods bought and used by him exclusively for the purpose of earning his livelihood, by means of self-employment; (b) the expressions "buys any goods" and "hires or avails any services" includes offline or online transactions through electronic means or by teleshopping or direct selling or multi-level marketing;