Samsung A3 Echo Problem

Hello<br> <br> I have been struggling with a persistent echo problem on my Samsung A3 cell phone. When I make or receive a call, the person on the other end of the line hears a terrible echo of their own voice whenever they speak. I have had Vodacom send the phone in for repair FOUR times and yet the problem persists.<br> <br> This has been dragging on for more than 6 months now and I am fed up with the inadequacy of their repair attempts. The phone is currently in for a software upgrade that they say might fix the problem. Meanwhile I am struggling to get a hold of the person responsible for the repair.<br> <br> If the phone comes back with the problem still not solved, then I demand a new, working phone, or I will cancel my contract with Vodacom and take further action regarding their poor service in this regard. Everyone will hear of this on social media. Please Vodacom. Fix the problem or send me a new phone asap!<br> <br> PS: In the event that Vodacom replaces my A3 with a new phone, I also want the screen guard for the phone free of charge. I purchased and installed a screen guard on the broken phone and will, therefore not be paying for another one!