Senior Pharmacist responds with bad attitude

I went to the Netcare Unitas Pharmacy yesterday after visiting my mother at the hospital. After a distressful visit (due to the condition my mother is in) and the bad cough I have. I thought to go to the pharmacy to get some cough medicine. I was on an emergency call with my client. During our conversation my turn came to be assisted by the pharmacist in which she instructed me to drop the phone. I explained to her that I am unable to put the phone down due to the nature of the conversation. In the meantime I asked her for some cough medication. She refused to assist me saying that she will only do so after I dropped the phone despite me explaining to her how come I unable to put down the phone. I found this manner of treatment unacceptable as she was refusing to service me and not being sensitive to both my circumstance and the condition of my client.