No.  The beauty of dT Sky Wire is that it is the one of the few services that is completely unrelated to Telefónica / Movistar.
The system is installed by our own Sky Wire engineers and it operates on the Sky Wire backbone.
In the event of Technical Support, it is the staff at Direct Telecom who you will be dealing with and if there is a technical incidence with your installation, it will be our Sky Wire Engineers who will service the equipment, so no more sub-contracted Telefonica Engineers!

The only reason you may have to deal with Telefónica / Movistar might be when cancelling any services you may have with them, but even here we are happy to help out with this 😉