Hyundai — gear problem

Address:

Patna, Bihar

sir i have a santro glx BR-2L3769 top model purches in july 2010. my car is still in waranty period according to hyundai rules. now i am facing gear problem when i reached service station they keept my car for 5 to 10 days and make charge and told me that your car is now ok but after few days same promlem. and again i am facing same problem . plz guide me i will do.