Tata Motors — no connection of mobile with music system

Purchased tata zest in dec 2016. But the problem is no mobile other than samsung connects with the much touted harman music system through bluetooth. Dealers also failed to fix the problem. While the same mobiles connect successfully with music system of other cars. I advise the tata motors to either change the music system with a better one or provide me a samsung mobile free of cost.. Otherwise the music system installed in the car is as good as an fm radio available in the market for rs150... Hoping a prompt reply-anurag dohroo