I have faced same issue today for Cello. I have contacted my bank and they promised me that I will get refund in two days. Let's see what happens. Please contact your bank.
Same issue with me. Today after 3:00 pm from my account cello ipo deducted amount second time. I contact bank but didn't get proper answer. So any one can suggest next step
Can you please check description given in bank statement for money debited yesterday. Because when money was debited first time on 6th of November then description in bank statement was something like UPICELLOIPO/Transaction ID. But when money got debited yesterday then description in bank statement was something like UPICELLODD/Transaction ID