The company says a glitch in a new system introduced to manage hamper deliveries is causing massive delays.
Chrisco CEO Lee Hill said the company was contacting affected customers.
"As of Saturday last week, we made a call that where we couldn't absolutely guarantee that we could get the hampers to our customers on time, that we would proactively call them and offer them a refund to ensure their grocery needs are met before Christmas," Mr Hill said.
Customers in Queensland and New South Wales are worst affected.
Chrisco has set up a toll-free number for more information: call 1800 830 830 or visit www.chrisco.com.au.
I order from chrisco castle and Hamper king this year and have'nt had any problems have recived all my hampers bar 2 which are due to arrive next week by Aus post.. All my frozen things were still frozen when I recived them and all the chicken items were steggles so well known brand . so no complaints here but did have problems with them last year but got a full refund