Logged a Sales agent to phone me as we would like to sign up

Logged a Sales agent to phone me as we would like to sign up. Receivef email htlp on the way. Now 90min later not a call from no one. Phoned Sales dept. Spoke to Donovan. He said oh can help me on phone. Said no please phone me back as I requested as not going to loose airtime because have not been called back. Still waiting another 30min later. Terrible