Cable hiding within your wall is a paid add on service. It is not included as part of the standard wall mounting service but can be added to your order for an additional charge.
There are some circumstances where it may not be possible or feasible to hide the cables behind your wall, in these cases your technician will discuss your options whilst on-site.
If cable hiding is not possible your options may include hiding the cables within conduit discreetly attached to the surface of your wall, or the option to decline the cable hiding service for a refund of that portion of your installation order.