Hi,

Given that it is only a month old and that it doesn't charge or turn on, first verify that the warranty period is still valid by checking that you have the sales receipt or other proof of purchase e.g. a credit card statement or a bank account statement which shows the purchase. Then consult the warranty document that came with the speaker as to what you have to do to obtain a warranty repair or replacement.

Here is a link to the warranty as offered by Oontz. (seems poor considering that they only give a 90 day limited warranty - they mustn't have much faith in their own product, most other makers give 12 months!)

https://theoontz.com/pages/warranty