Voice Text in Messages

A few things...when making a voice text, why doesnt it pause and save what youve already done if a phone call comes in and interrupts? Ive lost soooo many because of that and it is beyond aggravating! Also, how is there not a pause function that saves your spot if you are listening to one and have to come out of the convo? I always have to start the message over. This brings me to the last one...a rewind or fast forward function would be completely helpful.... currently you can only push play and hope you get through the first time without distraction. Anyone know why these thing havent been addressed with voice texting yet? Thanks!