Imagine the cost of sending an engineer out in the middle of the night to the wrong site because their out of hours outsourced call center didn't check the post, zip code properly and the engineer went to a site 200 miles from where the equipment had broken down. We come across lots of examples where the wrong information has been sent out or has not been received because information hasn't been checked.
If you don't check key details you can misspell critical words, such as the customer's name, address or here in the UK their postal code which is often used to locate customers. Unless you have the latest technology, some letters sound very similar over the telephone for example 'F' and 'S' and 'B' AND 'P'. The phonetic alphabet or the spelling alphabet will show your customers that you want to get it right for them.
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