Driver comes at 10pm accusing of theft

I am extremely upset that a driver Masood from the Ormonde store can come to my gate at 22h15 hooting like a maniac, waking up my kids and the neighbour's accusing me of *****ing R100. He says I underpaid him for a delivery earlier in the day, without any proof. How dare he does this? ? And to anger me off even more he does not know the owners number or surname, all he says is a Mohamed owns the store. I want to speak to the owner about how rude it is to wake me up at 10pm and my kids and accuse me of theft of a lousy R100. I demand an apology or I will take this further. This is a violation of my human dignity and I will be opening a case if I this is not taken seriously and I am formally apologized to.