Vodacom Cresta bad service

Went in to Vodacom Cresta get a new contract and renew another contract, was promised a free powerbank (there were 3 things I could choose from on their special) for each contract but they were out of stock and to this day I have never received my powerbanks or a phone call to let me know they are there now available. Also my new contract was signed for on the 16th Dec 2015 and my number was already available for porting and it took them until 29th Dec 2015 to connect my phone to their network, this service is unacceptable, not to mention that the consultant never called me once I had to follow up daily to find out about the connection and no one would let me speak to the manager either I just got blocked all the time. STILL NO POWERBANKS!!!