Disgruntled customer

I bought a 3 tep package plus a serum at the end of October. I had a bad allergic reaction, had to seek medical advice. I then went back to the store I bought it from and the sales lady was not there, I proceeded to leave my contact details and only heard back from her 3 weeks later. She could not help me because I had misplaced my receipt and gave me the contact details of Clinique. I sent a detailed message explaining my situation and asked for an exchange but no reply since. I have sent another message and am still waiting. I pai R1000 for products that did more harm to me and now I can do nothing with it. They can use it as their testers on other Guinea ***s and just refund me or exchange it for perfume or makeup.