Misleading and unreachable

I am trying to cancel my contract and port my number. Branch keeps on refraining to reveal information to me. Then apparently I can ONLY cancel my contract and port my number via the call center, whom I have been trying to contact for 2 days now. First the options they give to enter your ID, cell or account number does not work or the phone just does not ring. When you eventually after several attempts get it to ring, no one answers - I stayed on the line for 45 minutes and no answer!!. Then I submit a request on the website for them to contact me. Then I get an email back to say that they will get back to me in 7 days!! This is unacceptable! incredibly **** service and after 10 years of this utter **** service, I am fed up!