New contract starting out with very bad service from Telkom.

I ordered a mobile deal from Telkom which has been processed on the 20th of March 2019 and debit order went off my account at that same time. I was told that my mobile phone will be delivered within 3-5 working days. A week passed and I haven't received anything. I followed up on my order and there were no stock. A week later I was told stock has come in and it has been allocated to my account so I can expect delivery within the 3-5 working days. It is 11th of April 2019 and I am sitting with 5 reference numbers for calls I've made (each took at least 40 mins long) and I still haven't received my phone. None of the consultants I spoke to can escalate my query or put me in contact with a manager. This is my first contract with Telkom and this relationship is starting in a very bad way Maybe I should just stay with my current Network, I wonder how long it will take to cancel this contract and get back my money.