ONN 8" Tablet headphone jack not working?

Update: My dads new tablet from wal-mart, model ONA19TB002's headphone jack is not working. We took the product back and exchanged it for an identical one, and this one is having the same issue. We've used multiple headphones and earbuds so thats not the issue. When we plug them in the sound still comes out of the... show more My dads new tablet from wal-mart, model ONA19TB002's headphone jack is not working. We took the product back and exchanged it for an identical one, and this one is having the same issue. We've used multiple headphones and earbuds so thats not the issue. When we plug them in the sound still comes out of the speakers. Im not sure where to get support for this product or what the issue could be :/
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