Telkom frustrates me

I have never been this frustrated in my entire life, Telkom will send me straight to ER.I took a contract with them about 2 weeks ago and requested them to port my telkom prepaid which I have been using before taking the new contract with them, they agreed they told me it will 72 hours that was on the 15th of June. In the mean time I had to carry 2 phones which I ddnt want bt I had no choice bt 2 carry both phones this happened for like a week mind you I'm communicating with them on a daily basis they keep telling me it takes time blah blah blah.... 2nd week they still have not resolved my issue and when I try to call them on their landline no1 picks up the phone oh this is Telkom vangate mall, to my frustration I call a store next door (Specs for Africa) asked the kind lady from Specs For Africa her name is Fatima to ask telkom staff to answer their landline. 3rd week I inserted my prepaid Sim on the new phone removed the memory card because now I was tired of carrying 2 phone, everything was perfectly fine on Friday the 28th my prepaid number got engaged no1 cud reach me I ddnt mind coz I thought they were busy with my line, Saturday the 29th my number is still engaged, it went on until Sunday when I was checking if my number is still engaged I dialed my friends number and strangley a different number appeared on her screen,a number I have never used mind you this is the same Sim card I used prior to it being engaged I'm still puzzled as to how did my number change. My banking apps are down because they are linked to my old prepaid number, they are registered with that number I have not had anything from telkom. It's now day 5 without my number the same number that is on my CV's the same number I use for my business, my clients cannot get hold of me. If the issue is not resolved I'm canceling my contract with you guys nd returning the 3 weeks old phone too.