Thanx for offering this service.

I've been exchanging BOB for SLACK for the last couple of days without any problems, however I now have two withdrawals to my SLACK wallet marked as "Processing" for the last 24 hours.
This is odd as I have made withdrawals from my SLACK account for similar amounts without problem.  I am certain that the wallet receiving address is correct. 
Any insight into what could be the problem would be helpful.
Regards.