Customer is not Important

Bought a Vape from seller on BOB. Ordered with battery and when the package eventually came there was no battery. They did redeem themselves with battery delivery the same day. But however one week later and the vape is faulty. Spoke to the seller and he would have gotten back to me. Still waiting. Now he is not answering his phone of replying to any communication. Surely BOB has a vetting process to stop such practices. Not impressed at all