Poor service from call centre

The call centre menu is set up in such a way that I was unable to access personal help, since my cell number had been ported back to Vodacom. When finally through head office I was able to reach a client relations officer, the quality of sound and intereference from other officers on the line was so high I was unable to hear the officer. Also the offices was unable and / or unwilling to adjust his voice and speed of talking so as to enable me to hear him. I spoke with Pat Mamane at head office. Pindile Lusungwane at business Jabulani Mamhengeni

Such below par service. Why did I port my number back to VOdacom? 1) at no stage during the 24 months was I able to access help in finding a better package suitable to my needs. 2) Calls did not come through to my device, instead either unavailable was given to the caller or the call would go straight through to voicemail.