In KKH during Throw-back SYS events I haven't received all prizes

DevinD15

During the last two Throwback SYS events Born to be Wild and London Street Style. I logged on after the events were over and the new ones had started. I got the pop up box for prizes, but it only allowed 1 box to be opened. I contacted Customer Service and have been given the runaround! They claim they sent me more boxes to open but I just gey a pop up saying "thank you for playing" and I have to press "ok". 
Does anyone else have this issue?
The CS team has even told me I'm owed boxes, but I'm not getting the ones they claim they're sending!