Failure to activate SIM card on new contract

On 20 September 2017, I went into the Telkom shop at Vaal Mall and took out a Free Me 1Gig, R99 SIM only contract. My application was approved and I received my new SIM card. I was told that my existing mobile number would be ported to my new SIM card within 48 to 72 hours. That was over a week ago and still I am on my old network. Please advise.