Telkom's AWFUL phone and technology

I was told that I had to convert to the WI-FI phone as the copper lines were being discontinued. From day 1, callers complained that they either couldn't hear me or that it sounded as though I was screaming down the line. Then the phone simply stopped working. All attempts at getting assistance telephonically were futile. Eventually took the phone to the nearest Telkom shop who said the instrument was damaged. Collected the instrument on Thursday last week, on testing it at the store the sound quality was putrid - I was told that it was because the signal in the shop was bad. Brought the "repaired" instrument home, made 2 calls and both callers couldn't hear me for the loud echo down the line, phoning them back didn't help, them phoning me back, didn't help. Phone stopped working thereafter and still isn't working, so it again means taking time off work to go to Telkom. Maybe it's time to discontinue Telkom's services - this is just pointless!