State Bank Of India [SBI] — regarding hold on my account for 20000 inr and they are, not even registering complaints regarding it nor they are able to give any valid reaso

Address: New Delhi, Delhi, 110008

I had 15000 rs in my account. I tried to withdraw 10000rs from atm, but in first iwas not able to.in second try i was able to take out money. Now i got text that 5184 rs is remaining in my account. I withdrew money at 4.15am. At 7 am i get a sms that a hold of 10000rs has been put on my account. I tried to know the reason by calling the customer care, but they were not able to provide me any reasons, so they said i might have taken a loan. I asked them again then they told me go to your home branch and ask them. Currently im living in delhi and home branch is in chennai, i told them, but they said they dont have information. I said okay register complaint, they simply refused to register any complaints and asked me to call after 48 hours, now on 5th may i asked home branch manager on call, when hold will be over, he said in 48 hours. Now after few hours there was another hold of 10000 rs on my account. I have written 3 mails to complaint system of sbi, all rejected saying invalid credentials provided. No one even cares whether i get my money back or not. Can you guys help me out to get my 5184 rs. Im a student, i havent even told my parents about it.