Indian Railway Catering & Tourism Corporation [IRCTC] — booked 3ac pnr [protected] but got sleeper tickets new pnr [protected]

Address:

LIG 9, 2nd Floor, M V P colony, Near Sivalayam, Visakhapatnam - 530017, SHIVALAYAN STREET, Visakhapatnam, Andhra Pradesh, 530017

Hi Team,

We have booked 3rd AC from VM to VSKP for 14th Aug'19 PNR Number : [protected] amd i paid amount Rs 3795/- but Sleeper tickets are allocated with new PNR number [protected] and as per sleeper class my charges suppose to be Rs 1425/- so i need to get the refund of Rs 2370/-, I have sent confirmation SMS from IRCT as a proof

In this regard i have raised three Tickets
Ticket Id:-4758329
Ticket Id:-4754654

But my issue is not respolved and sending repolay messare with is not relavent to my issue, i tried IRCTC call center number also several times but there is no propoer responce

Need justification

Regards,

Kushal