Cancelling BKM60 and credit BKM59....

I took a LTE 70/50 X2 in error and I explained to Jade and Melisa. I was debited twice on my cheque account - for account BKM59 and BKM60. BKM60 needs to be cancelled and the amount credited to BKM59. The customers guys are so slow to understand that. I am currently on hold for the last 12min. The first consultant dropped the phone and the current one left me on the line for 12min counting....