Pharmacists who should not have a license!!!!

I went for an operation , got a prescribed list of medications I needed to get. Went to the Arrie Nel Hanrimed pharmacy with the prescription and received my medications. The dispenser gave me the INCORRECT medication with the INCORRECT label that she stuck on the bottle. I only realized this after some time of drinking the medication as I realized that this medication was causing more damage than anything else nor was it helping with the pain. This is absolutely ridiculous. I feel like suing this pharmacy as this is playing with someone's life. They couldn't even check that they did not dispense the correct medication to me. What if something were to happen to me?! This negligence could've costed me my life.