Redbus — amount refund

Hi Red Bus Team,
We have booked a ticket from Myailadudurai to Chennai on 16/06/2019 in Sri Venkatachalapathy tours and travels AC sleeper/seater. We 6 (4 female and 2 male) were ready for boarding at bus station, we have been informed that bus will be delayed 30 min late, a min later we received a message that bus is cancelled and amount will be refunded. We fought against the Bus representative, finally they arranged a tempo traveler and boarded us to chennai and promised to refund Rs. 5486 in 3 business days. Nearly 4 days have been passed we didn't receive any refund amount. Please take necessary action against the bus personnel and help us in getting the full amount as promised.Please find ticket details below.
Ticket No: TN7E79310596 PNR:74ETC5UZ.