That is why I dislike texting for other than things like "Drink later?" and "Time/place?" and "K". Most often it requires you to stop what your doing to check and/or respond and most people expect immediate gratification with a response.
You need to stop what you are doing to answer a phone call. When I text someone, I don't need an immediate response. That person can respond at their earliest convenience. If something was urgent or an emergency, then I would be more likely to call that person.