Phone back from repairs and still not fixed

<p>Brand new iPhone 7 received in June. After a week of use, I cannot hear calls nor can the person on the other side hear me. I sent it for repairs... after a week, no SMS saying phone isn't ready so I called in. The call center ere so confused firstly and could not tell me if phone was ready or not. That's not my issue. My issue is that the phone STILL DOES NOT WORK. DID QUALITY CHECK EVEN CHEK MY OHONE BEFORE SENDING IT BACK?????!!!</p> <p> </p> <p>now I must resend my phone and I do not have the time! I am leaving on holiday on 1 aug. somebody has to come and fix this mess asap. So highly annoyed </p>