Because graduate slots exceed the number of interested, and often qualified, students, many students will not get into graduate school. At this point, the student has several options, a) apply elsewhere, b) re-apply after taking actions to improve components of the application, and c) consider a related field.
a) Apply elsewhere: By searching the ASHA database for graduate programs, students may be able to find programs with higher admission rates. It may be that you did not apply to a wide enough range of schools and that doing so would result in a successful application.
b) Re-apply after taking actions to improve components of the application. Most students are aware of which areas were weakest about their applications. If not, students are encouraged to meet with a faculty member to discuss what areas need the most improvement. Perhaps you need to re-take a few courses to improve GPA. Or maybe the student needs to re-take the GRE after more careful study. It may be that working for a year in a related field would give the student valuable experiences with populations most serviced by speech-language pathologists and audiologists. Although this lag may seem disappointing, it could be an opportunity to do something different, such as work abroad, live in another part of the country, or just have experience working full time.
c) Consider a related field. Speech-language pathology and audiology are fields that involve interpersonal interaction, application of science to human behavior, and helping others to live life more fully. There are many other fields that also include these components. Education, special education, public health, nursing, and many others. One way to look into alternatives is by searching Kent's GPS site. Your academic advisor may also be able to help you assess what careers are best suited to your interests and skills.