Download Google Text to Speech as Wav File

I require someone to create 17 wav files (8000hz/16bit) from Google Cloud Text-to-Speech. The language should be English (Great Britain) and the voice name en-GB-Wavenet-A (taken from [login to view URL]) The text should read: Thank you for calling [name]. Our office is now closed. Please leave a message, and a member of our team, will call you back during the next working day. Thank you. Where [name] is replaced with 17 different variants. These are just one off's, so we do not need a web page built to do this - just the WAV files created.