Useless Service!!

I called the call centre several times and I was told I got unlimited data and the consultant told me it is not going to expire. To my suprise it expired and I called the call centre and they told me I got 1 gig data per month, I spoke to different team leaders asking to speak to Mohammad and they advised they will get him to call me which never happened. The staff is absolutely *********** and have no communication skills. I then spoke to a lady in the technical department I think her name is Yolandiswa who advised me I suppose to get 2 gig data per month and she was going to call me back that same day to advise why it was not loaded. From then I have been calling the call centre and asking to speak to Mohammad and Yolandiswa but no one returns my calls. I am sick of telkom and where the coverage is also patetic. I regret moving from my previous service provider and I want to cancel my contract because this is not what I signed up for. I am also going to lodge a formal complaint to the head office regarding my whole experience with the call centre....