PATHETIC SERVICE AT TATA DEALERSHIP

The 17/12/2015 my car broke down. The gearbox broke and the very next day 18/12/2015 we took it to the TATA Dealership in Princess Crossing.The woman that assisted me said that it should nit take very long and they will do the service as it was due for it.Two weeks went by with no feedback from TATA as to what is happening.We then called them to find out what id going on and was advised that they did not know what the problem was with the car and the woman that we spoke to was not in...my husband then told them and they said it will be done.Two days later we received a call saying that the service was done and they waiting for the gearbox to come from India.We tried calling from the 04/01/2016 to find out if they received the gearbox they said that it was not there yet.We called again the 11/01/2016 and we were advised that they need to order the gearbox and we asked how long will it take and no ETA was given at all...we have been phoning everyday since then but nobody answers the phone.Its been 5 weeks without my car and i need it back.If they have receptionists why are they not at their desks or even service agents where are they if they are not doing the job...I want my car back