"Waiting time for face-to-face appointment "

I am 76 years old and losing my hearing. This is very common in the elderly. I asked to be referred to the Audiology dept of the NHS and was given an appointment date with a GP for four weeks ahead - this to make sure that I am really having sufficient difficulty with my hearing to justify a referral. I don't think every patient would be automatically given an appointment for four weeks ahead so I would like to know the criteria that is applied. Four weeks' wait seems excessive for a practice that has been so highly staffed and highly regarded for many years.