Bank Of India — amount debited but cash not received

Dear sir, i gone to withdrawn 2000 from obc bank atm but in meanwhile machine gets halted but message of bank received that 2000 debited. I complaint to obc staff they replied that the amount will be credited in 24 hrs if not then file cash reverse from your bank branch. On 18 filed cash reverse the bank staff said the amount will be credited in 7 days. On 28 i received bank message that your complaint has been solved. I checked my balance but amount has not been credited again i visited the bank said that matter has been marked solved but amount has not been credited. They said to file a written complaint so i filed a written complaint but till now the amount has not been credited