Unexceptable service

I purchased my Ford eco Sport in November 2015 with 3000km from Kouga ford Humansdorp. Since day one my airbag light was on but I didn't know what It meant. I took it into a ford dealership to check and they tried to fix it. After 3 days I got my vehicle back. Down the road the light went on again. I took it back to Ford woodmead. They advised that Kouga ford Humansdorp damaged a plug inside the car and I need to take it back there all the way from JHB to fix it as they will not pay for it. Today I was advised that the car is getting fixed and I will get it tomorrow, then the service manager Peter Zwartland advises that they are still not replacing the harnas they are just fixing the plug after my car have been there for more than 2 weeks as Humansdorp will still not pay for this. Fury ford woodmead has pictures of the damage and I get no feedback. This is UNEXCEPTABLE. FORD IS THE WORST CAR DEALER I HAVE EVER COME ACROSS with the most useless service. I expect ford head office to sort this out between the two dealerships that can not help a client. they have been fighting back and forth and the client must sit back and wait?