non-delivery of promotional items

My wife upgraded x3 cellphone contrcts last year october at vodacom chatz greenstone mall and was told that the x3 vivo v60 lite 5g phones comes with 3 free watches which they did not have stock of at the time. Was promised that they would call when it was ready for collection. Never got the call and even went to visit the branch after a few weeks from the initial purchase date. Was told that they were still waiting on the stock. Today my wife reminded me of the watches and again i visited the branch and am now informed that it was a free promotional item and now they cannot guarantee it. The store clerk said that she will try and do me a solid by asking the guy that visits their stores if he could get the watches but is making no promises. I asked for a number or email i could use to lodge a complaint was told there is neither a number or email available. Was instead told to message vivo to see if they could assist me. Really?