Hi Ostia,
I feel e sure that if you took a call in a stressful, noisy, or non-private place you would be well within your rights to ask them to call back at a time when you are more private.
After all it may just be impossible for you to hear the questions correctly and you may be somewhere where you can’t readily find a quieter place.
Obviously this should not be misused as a reason not to speak to them.
Regards
Pete
Nothing on this board constitutes legal advice - always consult a professional about specific problems