Noisy Clatter from Fiesta WT Auto

[popster]

I have a WT Auto Fiesta which has done 1000 kms. The car developed a clatter in the transmission which the dealer claims is normal for the double clutch auto but agreed to service the car and said that reflashing the transmission computer module has fixed the problem. This noise is now much worse and the car now suffers from erratic gear changes. The dealer claims that they cannot do any more to fix this problem.

I did refer the problem to Ford Customer Service and they called back and told me that they had contacted the Dealer and was told that there is no problem - "so much" for Ford Customer Service.

This noise was not evident in the car at the time of purchase.

Has any other owner had this noise problem and any suggestions as to next course of action.