"Too long to answer/headache inducing on hold music"

First of I appreciate the hard work and sacrifice from all our NHS workers. However, after making a call on the 22/6/22 and being on hold for over 20 mins. I was told I would have to call back tomorrow morning at 8am to book an appointment. So, 7:58am 23/6/22 I called so that I could navigate through all the prerecorded formalities and hopefully to speak to a human by 8:10am (I thought). Despite being number 1 in the queue I still had to wait over 20 mins to get to reception. I am not usually sensitive to sound, however, the repetitive, earsplitting music just seemed to rip right through me, leaving me with a head and a strong feeling of nausea (never felt this way before, is this just me?). After, speaking very briefly to someone I was then put on hold for a further 11mins. I informed the receptionist about the negative effect that the on hold music had induced; I did not know whether these were symptoms of my current illness or not.