National Payments Corporation of India [NPCI] — unable to complete you transaction

Address:

Hazaribagh, Jharkhand, 825314

Sir/madam,
Earlier i had two bank accounts (One of mine and one of my brother who is a minor) with same registered mobile number. But still i was able to use upi transaction facility in any kind of app like bhim, google pay, paytm, phone or etc... But one day the upi was automatically deregistered and i was told to login again.. But after that i am getting a message as-"you have multiple bank accounts linked with your number".. After that i went to the home branch and changed my mobile number separately for both of the two account. Now both accounts have two different and separate mobile numbers. But sill i am getting the same error message. My brother is also getting the same error message... I went to my bank, contacted those payment apps but no one is able to solve the issue then i thought it's a matter o[censored]pi so u might have the solution.. Please help