If you choose the option for cancelling your service you will get to the retention departement...they could help you solve billing issue, or get a receiver when yours is not longer warrantied, but they can not do any troublehooting with you. If you get to that departement and you problem is, indeed, a technical issu, they will put you on hold and call the technical departement.
There is no number available to the public...agents have an intrna numbe to reach the tech 3 (higher tech level). That number should not be given to the public, it is an internal number. If you are calling back about an issue for which you previously called about you can always try to tell the agent wh answers your call that you already ent throught all the troubleshooting, that tech 3 agent whn you spoke to them last time told you you could call and ask for them whithout going througt all the usual steps. It would work with a majority of agents, they have to respect a AHT (average handle time), so the quick call to put you on hold for the techs will compensate fo the long tech call they had before