You just have to keep saying their name to them at every oportunity and think two sylables are easier than one.
However at the end of the day the cat will decide if it listens
Franta Napoleon convinced me he was deaf and also the vet!
However he now answers..........when he wants..........to only Napoleon and he is not in the slightest bit deaf.
Misa knows his name but went striding down next doors path with his ears totally closed!
Sasa knows her name although I caNT TOUCH THE SEMI-FERAL BEAUTIFUL MADAM OOPs
Ducha, well ummmmmm I think he knows his name but very hard to tell LOL