It could have happened,  or your offer was too low,  some sellers,  just ignore the request saying neither yes, or no.

 

Or,  they have set a minimum to be accepted,  this has to be surpassed to warrant an acceptance.

 

You have 3 chances to send a Best Offer,  send another,  perhaps a little higher,  it may then be accepted.

 

@rosegarth23