How to Install aftermarket head unit

[imagemaker]

Hi, I made the mistake of having a Pioneer DAB130 fitted to replace the standard Stereo Unit by Halfords and they have messed it up!

I think I need the Fascia kit and necessary wiring to make it work correctly. Can you tell me what I need to enable the following to work correctly as there is less working than I expected?

1. Original digital display does not work now – so I cannot see things like temperature etc
   
2. Steering wheel controls do not work
   
3. Parking Assist Does not work (front and Rear)
   
4. There is no facia surrounding the stereo head unit!
   

Can you tell me where can I purchase them and how much it is

Also, last question, is would a trained stereo fitter be able to easily use your products to do the job correctly

Sorry to ask but Halfords don’t seem to know what they are doing!

Thanks for your help

PS I attached a photo of how Halfords left my car looking for your amusement