Still no upgrade after 4 weeks.

I went to the i-store in Sandton City on 23 February 2016, exactly 4 weeks ago to upgrade my phone.This was after I was sent an SMS by Vodacom advising me that my upgrade was due. I was told there would be a delay due to the implementation of the 3D Billing System. I did complain to Vodacom in this regard on even date. Eventually on 01 March a Quotation with No. *** was generated. However still to date, 4 weeks later, Vodacom is UNABLE to upgrade my contract due to their own inefficiency. Please advise how you can migrate to a new system when all other systems are not integrated? This is totally unacceptable and unprofessional and after been with Vodacom for many years as a loyal customer this is the service I receive. It is unacceptable. Further to this, when I have called Vodacom on numerous occasions they cannot give me any answer as to what the delay is nor can they give me any solutions. Totally pathetic and unprofessional service.