Bank has not used the cheques which were deposited to close loan

Dear sir/ Madam, On 15th Dec. 2015, I had deposited 03 Cheques of Rs.20Lakhs each to one nationalised bank in Pune, with a clear instruction to the manager to use those cheques to close the housing loan. I had received those cheques by a person against the cancelation of his property sale deed executed between both of us. While depositing the cheques, I had explained the situation to the manager & very next day, given him clear written instructions to use those cheques to close the housing loan which was issued by the same branch. At that time the loan outstanding was 60 Lakhs. (now it is of 70Lakhs) But the manager did not use those cheques to close the loan, not issued any memo to explain status of the cheques. I kept on reminding him several times by visiting the branch. I also had sent him the e-mail reminders to his official I.D. Whenever I enquired about the cheques, manager used to give me vague answer as he knew the cheque issuer very closely. As I was fed up with the branch and manager, on 02.05.2017, I brought this matter to head office by sending them written complaint by register AD post. Interestingly, very next week manager got transferred to other branch. As I did not hear anything from bank, I sent next reminder on 02.06.2017 to next level. But so far there is no feedback from head office. But, I received a call from the cheque issuer saying that he will clear the cheques in 15 days’ time (where 10days are already over.)Now I can’t trust the cheque issuer any more. I can’t even trust the bank (nationalised bank) as they have ignored my 02 written complaints. Now I am really worried with following questions, 1. What is going to happen about 70Lakh loan which is still on my name as initial borrower to buy the same property? 2. Bank manager has not performed his duty; even head office is ignoring my complaints. 3. The property for which I had borrowed the loan is also not in my name. (I assume all original papers are with the bank due to the outstanding loan for the same property ) 4. Should I take up a matter in consumer court as Bank is ignoring my complaints. Please suggest what best I should do in this scenario?