SBI — amount of rs 895 not refunded

Refund of rs 895 was suppose to reflect in my sbi account no [protected] by[protected] which was refunded by amazon.in on[protected]. For which the refund reference no is 891667.
I complained of this many times to amazon as well as to sbi but still till date the amount is not credited to my account. The purchase was made from my friend's sbi card. She even visited the sbi branch nagrota bhagwan hp but got no solution for this.