Horrible Client Experience

I called the retentions number on *** because I'm tired of bad service from Vodacom and failure to honour commitments. I was promised a call on Saturday to offer me a reduced rate to keep my contract with Vodacom. I've been a client for over 12 years and today Felicia was disinterested and didn't seem to care about my query. Which prompted me to move forward with my decision to cancel my contracts and consider another Service provider. Felicia's response was that they are all busy right now and there is no one available to negotiate terms with me. If you listen to that call you will feel disgusted at the attitude attached to the experience I endured during my call. Why should I now consider staying on as a customer when after 12 years of subscription I am made to feel that my business is not important enough?