Bad cutomer service and false advertising

I oredered a mirror which was advertised as 45cm wide, however, when the mirror arrived it was less than 40cm wide. I informed the comapny of and asked for a refund, but it has almost been 3 weeks since and I have not heard anything back from them. I called, I emailed and I contacted them via their website. I spoke with Lebogang over the phone last week who promised that she would give me feedback before the end of the week and I have not heard anything back. She was extremely rude and spoke to me as if I were stupid, and I didn't understand that the mirror was actually ordered from an external company. She could not give me a timeframe for the pick up and said that I would have to wait for the other company to pick up the mirror before I could get a refund. This is unprofessional, and their customer service is extremely poor. They also use my email for marketing purposes and no matter how many times I have unsubscribed, I still receive enormous amounts of emails from them. This is ******* and in violation of my rights. I am never using them again.