VERY POOR SERVICE FROM TELJOY/DEFY

On Monday, the 29th of June 2020 I contacted Teljoy to book a technician to come and look at my dishwasher that stopped working. I received a message from DEFY with job no: *** on Monday 29 June 2020. On Tuesday, 30 June 2020 I called Defy as a technician has not called me yet to make an appointment. The Defy technician told me that Teljoy cancelled the booking as they did not provide DEFY with our full complete physical address. I contacted Teljoy again on Tuesday 30 June 2020 to query the above. I was informed that there is currently a booking active and that a technician will call me soon. I contacted DEFY again on Wednesday 01 July 2020, and again the technician informed me that the booking had been cancelled. I sent an email to Teljoy on the 1st of July explaining my frustration to call back and forth with no solution. I work full time, leaving early in the mornings and arriving late in the evenings so the dishwasher is the only thing that makes the c****s bearable. On the 7th of July 2020 a Teljoy technical support consultant confirmed that they are following up with Defy and have escalated the matter. They will revert with feedback as soon as possible. A technician came to check what is wrong with the dishwasher on Thursday the 8th of July 2020. He confirmed that he will be back on Tuesday ( 14 July 2020) with the parts to be able to fix the dishwasher (The mother/pc board broke). When I phoned the technician on Tuesday the 14th of July 2020, he confirmed that he has not received the parts yet and will get the parts Wednesday morning. Till date no one has contacted me to confirm a follow up appointment. I phoned DEFY again on 20 July 2020 and they confirmed that the technician is booked for the 22nd of July 2020, however, when the technician was booked the 14th, I had to phone to follow up when I saw that he missed his appointment. On the 20th of July the Teljoy Technical consultant again confirmed their sincere apologies for the inconvenience and that they are following up with Defy and my service coordinator will revert with updated feedback shortly. The technician missed his appointment on 22nd of July, when I contacted him, he confirmed that he is still waiting for the right parts and that no one at TELJOY/DEFY booked him for the 22nd. I phoned teljoy on the 22nd of July and technical support advised that they will follow up and call me first thing in the morning. I have not received a call back. I sent another email to Teljoy today the 23rd of July 2020. I am so disappointed. I feel like I can just let Teljoy come and collect the Dishwasher and that I no longer want to be part of Teljoy. I am paying a whole months rental for a machine that is not working since the 29th of June 2020. This is the first time that I have received such horrible service and I have been with Teljoy for years.