Poor service and lost my battery for phone

I have send a letter to complaints department at Vodacom with now replay yet. Service at Centurion mall is poor. <br> Receive a new Lg G3 phone end of May 2015, and had to send the phone in two weeks later realizing the camera flash is not working, only works with a selfie. They stated it was software and now the phone freezes every time, cant end a call, you have to take battery out. Send it with almost 3 hours waiting and being pregnant, the store manager would only tell me the staff are entitled to a lunch and he had one employee there, with one walking around, not even addressing me as Mam or ask me for a more comfortable chair. Phone came back doing same thing two hours later and they told me it was an exchange??? Showed them what phone was doing again. I had to collect two days ago, got there and they looking for my battery??? They took the battery this time to test? I left without my phone and still didn't hear anything from them-if they have my battery now??? I suppose I should call them, and do customer service? There is no service at this shop and now respect. Employees are all young and require training.