UK Car Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question
This may be something as simple as they forgot to reconnect the harness connector to the climate control panel to incorrect wiring of the audio unit or accidently cutting or crimping the wiring to the climate control.
If you are wanting to find the problem yourself, I need to know if it has automatic climate control or manual climate control, as well as whether a factory audio system was installed or aftermarket system
Ok, I need the brand and model number of the audio unit if possible to pull its wiring diagram to see how it is supposed to be wired in and see if this might be the issue