A gripe among newsagent suppliers is the time and money spent re-sending inventory or other items newsagents say them have never received only to find, at some point down the track, that the goods were received.
Before you say I never received it, be sue you never received it.
I know from my own work with newsagents through my software company some have said they never received an email about a topic of importance and when I show them the MailChimp evidence they have received each email, opened them and clicked on some content links they still deny it.
If you are not sure, say you are not sure. If you don;t have a structured process for managing everything coming into the business from stock to collateral to emails, get the processes in place so your answers can be more truthful.