Disappointing Cell C

I've been a cell c customer for 20 years. Today they couldn't assist me telephonically because I failed a security check. The last time I called was almost 24 months ago. I was advised to call again to see if I will pass the test. I did, and demanded to speak to a manager because I could not accept this treatment. The manager returned my call who also conducted the security check which I amazingly passed. However she was unable to assist me with my query and promised to come back to me within ten minutes - that was three hours ago. I don't think their customers are important to them. I will be porting my 3 contracts to another service provider as soon as they expire.