Vodafone India — procedure for return of deposit

Address:

110057

I was resident in mumbai and had a mobile connection from vodafone,
I have since relocated to delhi and changed the connection to delhi circle of vodafone after formalities of porting.
The address of the connection was changed to the delhi address on submission of proof of address (Adhaar card)
On 10th of october i received an email stating that my total deposit was being returned to me
Cheque no —
Dated 10/09/2017 to the mumbai address and if i wanted the delivery address to be changed i shoulkd call the helpline no [protected] and or visit any nearest vodafone store with new address proof,
On 11 th october i called the helpline (10.35 am) one ms sonali was the helpline representative who categorically stated that the cheque can only be sent to the mumbai address and she was not accepting what was communicated to me by the vodafone email.
Today i visited the vodafone store where i had got the connection to delhi circle and the representative there stated that as per his records the address is changed to delhi and he expressed his inability to do anything further.
I am amazed that an international company has such contradictions in their dealings with customers
I made the change in my address while the connection circle changed to delhi,
The refund arises because of this change but the address is not changed for the refund,
The cheque is dated 10/09/2017 and the email intimation is made after one month.
As per the rules the cheque validity is three months out of which one month lost in intimation,
The cheque will be sent to an address where i no longer reside,
The cheque will be returned to vodafone and i do not know what happens next,
Maybe i will get another email intimation after a month and by the time the cheque validity would have expired,
I will have to go thru the process of seeking re validity of the cheque and the process starts denovo,
Vodafone in principle has refunded the advance but the consumer has not got the credit.
Is this the way bureaucracy works in vodafone or is a deliberate strategy to deprive the customer his due,
I have my job to attend to and for how long and how many times will i be able to follow up to obtain my legitimate payment.
After some time i will give up the effort and vodafone gets to use funds not belonging to them,
A simple step of sending the cheque to the new address already in vodafone"s record brings service standards acceptable to the consumer and is that something being asked to difficult to implement,
Can i get an answer?
Regards
Malay mukherjee