Vodacom (South Africa) is a ****

I've ordered iphone 11 at Vodacom (South Africa) about 4 weeks back and I haven't received it. I have only received an invoice from Vodacom. I spoke to one of their consultants and she told me that the phone is with the courier company and I have to call the Skynet courier company. I tried to call the courier company and they do not answer my calls. I called Vodacom back to assist me to call the courier company and they told me they cannot do that because it is my responsibility to contact them and they blocked my phone number. Now I can't get hold of vodacom and skynet courier company is not answering my calls. The invoice that I have received thru email clearly states that they gonna debit me the next month. I am concerned that they gonna debit me before I could get the phone.