Oxford Publications — Paid money but courier not received

Hi, myself padmavathi, i joined in oxford publication on dec 22, 2022.till now i didnot received any courier from them.the concerened person who make me join here and make me pay the fees she is also not responding.i google and search the hr team and mailed them.there is no use.i contacted coustmer care and no response.why these people act too smart to take the money from people who are waiting for there jobs.plz refund my security amount.