Samsung A12 purchase

Very disappointed and disgusted at their service, I bought a Sumsung A12 mobile phone and it was delivered on the 28th March, withing a day the speaker phone stopped working, I reported the matter and the phone was collect for repairs and I wish I had requested a refund there. it took 3 days to get response after it had reached their warehouse, OK then they requested the password, same was given , 2 days after they request the samsung password that I dont even know of, I gave them the password I always use for my emails and all. They said its incorrect that means they cant continue evaluating the phone, this is now the 15th day without a phone, my business is standing I cant do anything, I asked them is there no other way they can open the phone without this password, this is nonsense, I could have taken my R3200 anywhere else and bought this phone but I choose them and this is the kind of service I get, I will never buy from them ever again and will stop all my family from buying from them, they pathetic . I'm waiting for the phone to return unfixed and I will log another request for refund, I will not use the phone that the speaker is not working, why is it difficult to issue a new phone