Worst call centre agent ever - worst call centre

I called to ask for a number for upgrades and I spoke to Tanya \the worst call centre agent ever"and I come from from a call centre Environment. She gave me the wrong number and it was like she was doing me a favor to answer my call. Whatever happened to customer service. And I left a message about 2 weeks ago for someone to call me regarding my upgrade and I'm still waiting. Today I called the 021 number for upgrade from 8:15am called several times with no answer"