Renault Germiston and their bad service

Had a very bad experience with Renault Germiston.Went to service my car in February and found that the was something wrong with the radio,warranty approved for the replacement on 21 February.The service advisor(Esther) said she was going to order the radio of which it will take 3 to 4 weeks. I sent her a WhatsApp on 11 of March to find out how far was the order and she told me it has not yet arrived.I have had to call her 2 times already since February and first she said she would follow up and never did.She has never called me not even once.On Friday 24 May I decided to go to renault East rand to buy a part and I ended up asking the stores guy how long exactly does it take for a radio to be delivered and he said 2 to 3 days if it's in the national warehouse and 3 weeks if its ordered abroad,he asked for my VIN number to check if these any radios nationally and guess what there was 11 radios.I then explained my story and he said it's clear that Germiston doesn't know what they are doing.Tried to contact the national customer care but no one answers.Called Germiston on Monday 25 May and asked to speak to the manager and guess what he first lies and says Esther has not been at work since the lockdown and I ask him how come I spoke to Esther 2 weeks ago and she was at work.Then he changed and says no she only came to work once.Then I ask him why is it taking so long and hecomes up with the Covid story that they closed on the 26th of March ,and I tell him that if u count from the 21st of February to 26 March it's way beyond the 3 weeks turn around time and why must I constantly call them.And why did the guy at East rand find 11 radios nationwide yet they say there wasn't any.To cut the story short he first tells me that I can go ahead and log a complaint throught their customer care and then he says he would speak to Esther and asked for my car registration and said he would call me back but its day 3 and I haven't heard anything from him.Next time I wont buy a renault because its clear that these no service at all.