State Bank Of India [SBI] — Amazon refund amount not received

The amazon company refund of an amount of Rs.4, 199/- on 13/04/2017 vide reference no.IGABCWLDW7 to my SB A/c No.[protected], State Bank Of Indai, Main Branch, Nizamabad. But till date not received. Do need ful immediately. The amazon company is telling that they have already sent the amount and asked to meet SBI Main Branch, nizamabad, Telangana State. They are also not responding to me properly.