Nokia 7210 Supernova — charging,volume,hearing the shaking of components inside

dear sir/madam,
i have bought nokia 7210 supernova on 29th of september 2009 in mysore,karnataka.after 3days our battery charge has gone and we put for the charging.the actual time for charging is 1 and a half haur but it took 3 and a half haurs to charge.why it is so?and its volume is very less that we cant hear it in a noisy situations.we bought it for a purpose of our parents and they cant hear it and recieve the phone cal of any one when they are outside and even i couldnt hear it..and the main problem is with inside.we dint throw it down but something is shaking inside the mobile.what happend to this??and pls let me know what i can do for all these troubles..