Cancellation Transfer Memorandum in Noida

I had a deal for a Janta flat in Noida Sector 40 in 20 lacs in May 2021 with token amount of 2 lacs. There was a overdraft of 12 lacs from union bank on that property on seller(House Owner). Seller asked me 10 lacs more to release the property papers from bank which I refused initially. I gave him 10 lacs more in July 2021 to start TM process because he had no money to release papers and I wanted to close all processes ASAP. We applied for TM in July 2021 itself. I followed up many times but seller always making false commitments for registry from last 9-10 months. The property is on rent of 9000 rupees. I asked him for my money back as it was getting delay day by day and I already paid 60% money for which I am also paying the interest and he got relief from his interest of OD. After many arguments, tenant started paying rent to me from October 2021. I think there are some issues with this property as TM is taking so much time, So, I dont want the registry of this property now as its being long time and TM not yet received. Could you please help me how can I apply for cancellation of in progress TM and how can I get my 12 lacs back without any deductions. All money is transferred through NEFT expect 25,000 rupees.