Mahendra Marbles (p) LTD. Account block without any reason

mahendra marbles pvt ltd sbi 61045591665 block from bank and when I go to bank they have no response me and they not able to give reason & they are not know that from where account block .I already request to manager from 2 MONTHS & not able for transection of any type . I have balance in bank a/c , my gst return challan are also pending.PLS take action and regulate account