State Bank Of India Air Force Jamnagar Branch — not providing the information

Address:

361006

I am a defence pension holder and drawing pension from state bank of india air force jamnagar branch through account no [protected].
I submit an application to convert my said account to dsp account on 29 sep 2017 but till date it has not been converted.
I got a sms from bank where they have inform my account could not be converted due to unavoidable reason and ask me to contact on mob no [protected] but no one is attend the call on said number.
As a consumer i want to know the what are the unavoidable reason hence i several mail sent to 1. Sbi.[protected]@sbi.co.in, 2. Agmcustomer. Ihoahm @sbi.co.in, 3. Gm. [protected]@sbi.co.in, 4. [protected]@sbi.co.in, 5. Gujaratmumbai. [protected]@sbi.co.in but no one has answer me till date.
I made a complain through consumerhelpline.gov.in vide docket no 506637 on 14 nov 17 but no reply has yet been received.
Submitting for necessary perusal and solution please.