Pathetic service from Renault

I have been trying to change the brakes on my Renault Clio since December 2019. The brakes on my car is skreetching and it has gotten so bad that the car struggles to come to a hold and feels like I am driving "metal to metal". The story I am told is that there is dust in the calipres, what a load of nonsense! Renault is now blaming liquid capital for taking long to approve the process, although today the story has changed from "dust in my calipres" to "there is under 3mm left on your breaks" why do customers pay for service and maintenance plans if it does not work?Why do paying customers have to jump hoops for a service that they are paying for? To date Renault has not fixed the problem and has sent me home with a car with no brakes!!! I called the complaints line to lodge a complaint, they put me through to liquid capital, who again put me back to customer service! Renault is not interested in listening or resolving customer complaints, instead you get transferred from pillar to post and end up frustrated with no answer! This is pathetic service, I would not advise anyone to buy a Renault! I will be trading this car in and would rather go to another dealership/brand! I will never buy a Renault again!!