Why is my account in Lien and when will it be unfreezed,

So, the story comes into the picture when I gave one of my friend some money and he returned it back, the amount is of 30,000. After few days, I receive an email stating that my account has been in lien and details of transaction was attached. When connected with the bank manager, she helped me with contact details of DSP in Rajasthan. She also told me that someone from Rajasthan has filed for complaint. I don't know anybody from Rajasthan, I'm a maharashtrian so I don't have anybody overall there nor do I know that person. I contacted the DSP and he simply said that I'll have to go to Rajasthan to resolve this issue. Now the bigger problem is that the DSP is a creep. He visited mumbai for some work maybe and asked me to come to Mulund police station out of nowhere, in the middle of the day, I was unable to go and asked if I can come the next day. He said that I'll have to then come to Rajasthan only. Then again the next day, he said when will I come, keep in mind that he did not give any confirmation on time and anything. I again said that you did not inform anything prior and he asked to come to Palghar, then in between he asked me where I am and said that he is in borivali as if he's asking me to meet alone. Within 3 days he asked to come to 3 different locations. And lastly I insisted to let me know by what time shall I visit but I received no response from him and he said that I'll have to come to Rajasthan only. I checked with my friend who transferred money whether anything has been updated to him, he contacted his bank and told that everything is clear from his end. I have no idea why this is happening and the police is extremely creepy. He keeps on sending me good morning/ night images and comments on my status (Forgot to hide it from him). I'm feeling stuck and really now understanding about why girls are really not willing to go to police and ask for legal help. Please help me with this and solution. Also, let me tell you that 30k that was transferred, I self transferred it to one of OD account (11k) and rest was in savings account of Axis bank. So, both accounts are in lien. I need to get rid of this lien before August as my OD account will expire by that time. Please guide