Vodacom selling stock they don't have

I tried upgrading at a vodashop 2 weeks ago. After asking about a contract and the specifically the availability and delivery time as these are very important, I was told it would take 3 ro 4 working days. After a week, I went back to query. I was then told it was on back order and would arrive the following week. Today I was told they can't tell me when I'd get it. Why are you sell8ng stock you can't get. Is this your way of creating **** demand or to keep me on the line for targets. If you were just honest, I could have re reviewed the available stock and made a decision from there, but no, keep me in the line till I cancel my whole contract. And the nerve to only send me the sms that the quote was generated the same day as I complain and canceled. Proof that I was kept on a line and the contract not even processed until today.