Malaysia Airlines – My booking 6wqsd5 and 6ww7v7

I mistakenly booking a return flight ticket for 2 on 21/6 instead of KL to Kota Bahru, I booked Kota Bahru to KL for flight on 13/9 and return on 15/9. I was given a booking number 6WQSD5.

Upon realizing it was a mistake on the same day I called MAS Call Centre and was advised to book within 24hrs in order to process my refund, which I did and was given a booking number 6WW7V7. I called the Call Center to inform my new booking and was told by a staff name Ganesh, he will call me within 3 to 5 to inform the process. Unfortunately, there was no returned call and I have to call the Call Centre again on 28/6. This time a staff by the name Fatin answer me and was told both my booking is still on without any cancellation.

I informed her to cancel my 6WQSD5 booking and was told within 2 weeks I will have my refund. Until today I have not received any email to inform me of my refund process.