Market Hero I asked for a refund on June 1st 2018, refund not processed until the 12th

Market Hero support staff did not issue a refund until June 12th. on June 1st I got a notification for my refund inquiry stating that the refund would be processed with 24 hours and then the subsequent 5-10 business, which would of been fine.

When I asked why my refund has not hit my account yet, the staff said that due to miscommunication on their part, it was not processed on time but it was processed on the 12th. 

When I asked for an explanation on the "miscommunication" they refused to give it ..