Promises promises promises

Firstly I am still waiting for a quote for two new cars from Renault George (I since purchased two new vehicles from their PE branch, cash deal) since October 2014. Anyhow my Duster has a fancy radio/navigation system and it does not work properly, I phoned the Service dept in George and spoke to a Miriam, she told me that they had tried to fix the problem on other Dusters but had only a 50% success rate and would I be willing to take the chance. I should rather phone back two weeks later, I allowed a month to go by and phoned again, she took my phone number and said she would get back to me. This is another 3 weeks later still no call? <br> <br>