
We had cause to wonder recently if people who pronounce that strong coffee drink as "expresso," also spell it that way.... They might not -- sometimes we do say things differently than we spell them (people and language both being complex!!)
Either way, our advice is to try to be conscious of differences in what you hear from one person to another, and then investigate why those differences exist.
You may just discover that something you thought was right isn't, and improve your own communication skills as a result!