Faulty WAG ALTERNATOR

Last week Thursday I bought WAG ALETRNATOT FROM GOLDWAGEN RANDPARK, and the product was faulty and did not work on my car. I also asked the consultant if it is right and he agreed.

I went back to return the product and I was told that I have to WAIT 2 WEEKS FOR THEM TO TEST IT. I PAID 1500 AND WANT TO GO AND BUY A NEW ALT SOMEWHERE. BUT THEY REFUSED TO REIMBURSE ME. WHAT KIND OF CUSTOMER SERVICE IS THAT. THE ALT WAS PREVIOUSLY USED AS IT DID NOT COME FROM THE BOX. PAY BACK MY MONEY