I had one this morning!
Claiming to be Amazon is just one variant. The scam caller names a supplier, any supplier, and says £xxx has been taken, if that's wrong press 1. Don't know what happens if they're contacted, but it's unlikely to be good!
Although these calls are usually fairly obvious stay alert! Even a clever suspicious person might fall for it if, as in JA's example, a spam call accidentally aligns with a real-world problem. Stop and think before responding even if it seems to make sense – few if any legitimate enterprises ring up out of the blue in this way. It's unlikely to be genuine.
The con may involve them telling you to ring back on, say, your Bank's correct number. You hang up, but they don't. You dial the bank, but are still connected to the bad guy, who then pretends to be them. Now you're convinced it's the bank and follow orders… If asked to call back, ring someone else first to make sure the original call is really disconnected.
Dave