Voicemail Recordings double speed

I’ve noticed that our voicemail has worked fine but recently when somebody records a voicemail it either plays back or is recorded at double speed (evidence points to recording at double speed). Is there any one who has noticed this before and is there a fix or an idea for a fix.

Is there currently an option in * to speed up or slow down playback and/or forward/rewind by 3 seconds ?

Thanks
KM