Retest

i reached at exam center on time but by mistake i forgot my i forgot my graduation marksheet cordinator say we don’t allow without full document so he say pls arrenged otherwise we don’t allow for the test so i arrenged but while arrenging my test time has gone i appear in exam after start of 40 min so i don’t have complete 2 hours to complete my test so i want to retest exam what should i do