1 Match the words to their meanings. 1 charge 2 customer service 3 discount 4 exchange 5 online shopping 6 promotion 7 purchase 8 receipt 9 refund 10 send something back a a piece of paper you receive when you buy something b money given back to you if you return something c take something back to a shop and replace it with something else d something that you buy e helping customers in a polite way f ask for money for a service or activity g a special offer on a product h shopping on the internet i return an item that you bought online j a lower price than usual for something