Agent not delivering the service promised

On the 04.03.2016 I went into the Absa Towers North Vodacom branch to apply for a contract phone, the agent ( Luleka Maxengana) whom was assisting me advised that the contract for the Iphone 6s at R379/month for 36 months will have expired by the 07.03.2016., after hearing this I rush to complete my application by providing her with my ID copy, Proof of Address, Payslip and 3 months bank statement and filling in the contract form (ICA ***) and signed the contract on dating 04.03.2016, once completed I submitted all the documents to her and she adviced that all is in order and that on the 07.03.2016 I would be collecting my phone. Monday(07.03.2016) passed without any response from Luleka and today (08.03.2016) I went into the branch to enquire on my contract applicaiton. <br> Luleka informed me that she has not processed my application and requested that I give her 30minutes to capture my application after 20minutes she informed me that the Iphone 6s at R379/month for 36 months which she wrote on the back of my application on the 04.03.2016 was not available as the offer ended on sunday 06.03.2016. I'am really dissapointed with the service provided by Luleka and mostly by Vodacom.