I can definitely understand your concern here. Let's try to alleviate some of the stress by trying these 2 links. The first will help with the low sound, and the second will help with the one speaker not having any sound.
Please read the link in its entirety to reap the full benefit of the troubleshooting. If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case-by-case basis, please provide the full model code and the serial number of the device as well as your best contact phone number, name, and email.
