Using formal language both in oral and written form is an advantage for you. You will be noticed by people and they will remember you more because your language stands out from the language use of others.
Using formal language infers that you are a well-educated and well-round person. People will likely believe in what you say because it will give credence to you and your abilities.
However, when you use formal language with people who are not as well verse to its usage, you will face discrimination or ill-will because they will feel insecure and intimidated by you.
Translation results
thatha umoya ojulile, ungabanaki abantu abaseduze kwakho, zinakekele
You haven't given us a source to take from
Its a street in the central Barcelona? not sure if correct just asumming
Answer:
you should say this *Ahem* Hello sir it seems you have dropped your wallet
*Doing and old gentlemen voice* oh it appears that is not my wallet
But you It has your name (The wallet says Richard)
*Doing and old gentlemen voice* why yes that is my name
Then that means it's your wallet so here you go.
*Doing and old gentlemen voice* It is not my wallet
But it has your name, your picture, and it fell out of your pocket
*Doing and old gentlemen voice* yes that did happen
then it's your wallet
*Doing and old gentlemen voice* no I'm starting to think it's your wallet take it home don't let anyone see the wallet otherwise people will take it.
Uh ok???
*Doing and old gentlemen voice* now let's see where'd I put my wallet wait...
MY WALLETS GONE!!!
(Sees the kid that tried to give him his wallet back)
*Doing and old gentlemen voice* THIEF, THIEF YOU STOLE MY WALLET!!!!!!!!!!!!!!!!!! POLICE, POLICE CATCH HIM!!!!!!!!!!!!!!
Explanation:
My throat hurts now I'm going to have to take sore throat pills
by the way this is all a joke just call an old man or woman a Sir of ma'am