State Bank Of India [SBI] — Unknown person credit card linked to me by SBI credit card backend team and not responding to de-link since 3 months.

Hi,
I have a single SBI OLA credit card only with limit of 7K.These SBI backend team had tagged some unknown persons credit card to me because of our both names are same .See how pathetic service giving by the SBI credit card team
I have been asking them to resolve this issue and de-link that unknow person credit card with my account since August, but still no response due to this my CBIL score effected and also i am not eligible for loans also. Below are few Service request numbers i have raised with SBI.

SR No :[protected] Raise on August They told me to wait till 15 days)
SR No :[protected]without resolution & intimated they closed my request so raise new one after 15 days)
SR NO:[protected]unfortunately they have closed my 2nd, 3rd request also hence i raised this new one)
For this new request TAT is 29th September only but till date no resolution from team, when i ask them they are not giving proper response also (they have only chargeable customer care contact number with cost of 2rupees /1 min & make you wait at least 40 mins to check the details)