Uncomfortable position

I went to Clicks in Eyethu mall Orange farm this morning. Had a bit of a cough and my voice was not coming out nicely ... Took some meds on the shelf as there was a queue at dispensary & some vitamin c tabs and was also looking for a pregnancy test. I couldn't find it on the shelves , I asked a guy working there and he said I'll find it by the tills . When I got to the tills I was assisted by a guy who was with a lady there , looked like they were just chatting . I greeted the guy and asked him for pregnancy test. He said "please speak louder" I tried raising my voice , but with the cough and ho****ness in my voice plus mask on my face I assumed that's the reason he couldn't hear ... I shifted my mask a bit so that he can hear me . Finally he heard me ! He then said looking irritated "Just raise your voice don't move your mask" 1. If you kept the pregnancy tests by the shelves I wouldn't have been forced to speak louder and even shifted my mask to be heard by your cashier. I would have taken the item , went to the tills and just greeted him and paid ... 2. If the cashier was alone and concentrated on me the customer , he would have heard me the first time. So he was busy with a lady colleague and assisting me at the same time. 3. Something's are private , I can't scream "please can I get a pregnancy test" I really felt uncomfortable , please do something about this !! Maybe put the stuff right by the tills like sweets if you are worried about theft , but not behind the cash desk .