mamba max replacment

I Would like to know who do i contact at castle creation about replacment
of my mamba max esc for the new monster monster.my problem is that i
sent in my old esc on dec 31.it has been a while so i sent them and email
to see when i should receive it. They email me and said that it was on the
repair floor for inspection.REPAIR FLOOR? I did not send it for repairs,i
sent it for the new monster max esc.Sent them a few emails and still no
responds.I Read the some one here sent thers in ,and got it back in one
week.What give.any help?