Bad and stinky services very disappointed

I will like to complain about telkom Melrose arch which I thought of the area I will receive a better service I went on a Friday 7 February 2020 to open up an account with them which I received a bad service from the beginning which I end up giving up on Tuesday or Wednesday 11 or 12 February 2020 I was passing by and they consultant called me and apologized and I understand as a fair person and we started all over finally we opened an account which I signed up for trouble not knowing on Friday later in the evening when I arrived home I noticed that the phone is freezing which I decided that on Monday I will take it back which I did on Monday 17 February 2020 when I arrived the called the store manager it Melrose branch she is very rude I'm not sure if she received any training or she just had no humanity or she needs training but definitely something need to be done I explained everything to her and told her that the phone had no 7 but now it start to acting up I need a new phone she told me that now the phone it working there is no need for me to get a new phone and what would she say to Samsung if she had to return it back it either I take the phone or I cancel the contract and I choose to cancel a contract than paying for 24 for something I'm not sure if I'll get a better service for she told me she will cancel it after 2 to 3 weeks I received an invoice stating that I need to pay R6095 for cancelation fees what cancelation fee for they the one who failed me and am I paying them for their awful *********** service or am I paying them to get money to send their staff on training or what I went back yesterday to ask the store manager to sorte her mess out which she promised she will do and will get back to me yesterday until now she never did and now they don't answer the lines I'm the one have to chase them to do their job I don't get paid for that and I don't want my account or name to be dragged on the mud