unhappy customer

I send my phone (Xiaomi Redmi 4A)for repairs at dionwired mall of the south and two weeks later I received the phone back.i was so happy to get my phone back but my happiness was short lived as my phone was not repaired it was still giving me the same problems as before.i contacted the store and they told me that the supplier saying I must book the phone for repairs again which I did.i booked the phone last week Tuesday 05.02.2018.the phone is still not picked up by the supplier.at this minute I feel let down as a customer and I have no idea who is willing to help me as I need my phone to be able to be in contact with my family and friends and now I have to spend another two weeks without my phone.this is unacceptable.i don't understand why the phone was not fixed the first time it was booked in.