State Bank Of India [SBI] — Not received quarterly milestone pizza hut vouchers

I am using SBI Prime Credit Card, as per the privileges it has given, if I spend 50k in a quarter than I will get Pizza hut voucher, I used to get every quarter but for Feb, Mar and April 2021 I didnt received, I tried to call customer service but IVR is not giving any option to contact customer representative. I emailed to SBI Credit customer service, they sent me an old voucher and washed the hands but not sending me the new voucher. I am frustrated with the customer support given by the SBI Credit Card.
Requesting you to please help here