Can a pvt bank can terminate any employee with suspension

If you resign it would be mistake on your part.  They should not terminate you without propery inquiry, serving chargesheet and without giving a fair and reasonable opportunity to defend yourself.  Compromise with the party who filed case against you, pay off remaining 50% to him and tell the bank there is no case against me.

Settle the matter and obtain clean chit. A competent and experienced lawyer can help you.Intervention by elders, well wishers, influencial near and dear ones and acquintances can support you.Highlight that faulty mobile was being sold to you by the indivisual and settle the matter. Sometimes such matters may become difficult if handled alone. As SCN has been issued it shall become part of your personnel file and bank may not conceal in reference check. It is better to clear the matter once for all, on record.

You have been well adviced by learned experts/members in both the threads initiated by you.

https://www.lawyersclubindia.com/forum/Re-Can-an-employee-be-terminated-on-ground-of-loss-of-confidenc-57480.asp

Normally banks may not like to continue with the services of a person accused of financial impropriety in criminal case.  They may be having the appropriate clause in their standing order/code of conduct.  But threat does not man that one can be arbitrarily asked  to lave.  There has to be a chargesheet followed by iniquiry