B2B list experts Total rip-off , scam , i thought i'm smart enough san francisco California

I have been hunted down by one of these B2B list scammers , his name is John as he claimed , i work in marketing domain and we always in need for contacts , and this is how i got trapped with this company that called B2B list experts , I demanded a sample list before signing the agreement which they provided few contacts and all of them where correct when I test ‘it

 Of course that was very dumb move by me , anyhow, I signed the agreement and we have requested a 62000 contact the cost was $4000 which we wired transferred the amount to their account And we received the list of bunch of incorrect address and expired contact’s and of course nothing related to what we requested.