Golf Mk7 Towbar Electronics - ParkPilot and Indicator Beeping

I recently had a Towbar fitted to my Golf MK7 at Indespension Bolton at a price of £450. This is to use with a Bike Rack.

When I attatch a bike rack to it and use reverse, the ParkPilot thinks there is an obsticle near the car and the warning noise goes off constantly.
Shouldn't the electronics disable the rear parking sensors when a Towbar is attatched ? I have heard that if it was wired correctly, this should be the case.

Additionally, there annoying and very loud beeping noises whenever the car's indicators are being used. I have heard that there should be a visual indicator rather than an audible one.

It is very aggravating to drive this car when the bike rack is attatched with all these audible alerts pointlessly going off.

I made a phone call to Indespension Bolton and told them that I suspect that the wiring or coding has been done wrong due to the above problems. They told me that with this type of car I'm stuck with the Audible noises and no way to deal with the ParkPilot issues.

Does anyone know what is causing these problems and have Indespension Bolton just done the job on the cheap and not bothered with the correct vehicle specific coding ?

You need to ask if they fitted a vehicle specific wiring kit / trailer module - it sounds like they used a generic one and there will be no way to integrate it into the car properly.

If it is vehicle specific the car will need coded using VCDS so it knows a towbar is fitted and it'll adjust various settings on the car when something is plugged into the trailer socket.