Total lack of care and service

On the 13/8/2023 I took my CPAP machine into a pharmacy in Johannesburg to be checked out. i was told it was still under warranty. I asked them to treat this with some urgency as I was being admitted to hospital on 1/9/2023. I received it back with a performance assessment report dated 17/8/2023 stating thee machine had passed all the tests it was subjected to. I slept on the machine for several nights and had to return the machine as i was still having a very dry mouth and told them the humidifier was still not working. ( So much for the performance assessment report). It is now 24/9/2023 and still do not know what is happening, although I was told that the machine has water damage now, about 4 weeks after the original assessment. I have been promised numerous times that the rep would phone me back, all empty promises. I think this is very unfair on myself and my wife as we are unable to have a goodnights sleep since the machine has been in for repairs at respiratory care africa.