Beaconbay Retail Park Ackerman's Useless Service

Bought a phone from the Beaconbay Retail Park branch on the 16th Dec 2018 two days into using it it started with hanging, when a call came through it would just go blank and I would not be able to pick up the call. I was on holidays so on the 2nd Jan 2019 back in town and the new years past I went into the store with the phone. They told me because I hadn't returned the phone within 7 days I have to leave the phone to be sent off for assessment. I asked how long that would take and I was told two weeks. Till today I have no phone and when I went into the store on the 29th Jan to enquire as there had not even been any message or feedback from anyone to acknowledge receipt of my phone or any feedback from the store I was promised by the manager prompt feedback the following day ie 30th Jan. No word from him to this day. Later that day on the 30th Jan I only received a message from 3G mobile on receipt of my phone. I'm very angry, disappointed and without both my money and a phone from the 2nd January till today the 11th February with no feedback and when I was at the store the manager was dismissive, arrogant and unhelpful. Ackerman's resolve this ASAP