after-sales service
noun/ˌɑːftə ˌseɪlz ˈsɜːvɪs/
/ˌæftər ˌseɪlz ˈsɜːrvɪs/
[uncountable]- the fact of providing help to customers after they have bought a product, usually involving doing repairs that are needed or giving advice on how to use the productTopics Suggestions and advicec1
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after-sales service