Shouldn't the pharmacist know better?

It was just yesterday,31 March 2016 When I went to Dis-chem with my mom, she had back pains and a friend had recommended voltaren to her. When we got there we asked for voltaren gel, she enquired about the voltaren pills, asked for them ONLY IF they do not contain an ingridient called proofen because she is highly allergic to it.The lady over the counter refused and said the pills do not contain proofen!Today,this morning, I wake up only to find my mom not breathing so well, her air passages are closed, we had to find her old asthma pumps to try and contain this situation.Her whole face is swollen, her eyes are shut!She didn't sleep one bit after consuming the voltaren pill.She drank a bit of allergex,I need to call the ambulance now as we speak. It so turns out that the voltaren pills do contain this proofen ingridient after all because that is the only thing that my mom's entire system reacts to in this negative manner. What bothers me the most is that we has asked several times if the pills had voltaren and the lady assured us that they didn't. Shouldn't she have known better?People's lives are at stake here!