TFG Online order & customer support

Having ordered a pair of shoes on Cyber Monday sales, 30 November, I am yet to receive and or locate the parcel. I received a mail confirming that the parcel will be delivered on the 12 December but have had no further communication since. TFG have advised that the parcel is with RTT for delivery or Couier IT. I have since contacted RTT and they have refered me to Courier IT who advised that RTT have the parcel. Absolutely no one is able to assist me with this further. I am not certain whether the parcel is lost between the two courier companies but surely TFG should be able to provide their customers with communication or support.