Vodacom 4U dissatisfaction

The plan was to port to Vodacom. I went to Vodacom 4U at sunny park mall. They started the process smoothly and was told to come back the following day with my ID and proof of residence besides already having 3 contracts with Vodacom. I know their closing hours as 6pm. Today I went there and was told they closed at 5 due to stock taking. I drove 15km to get there. My simple question to my frustration, why was I not informed yesterday while at the store. Or atleast they could've put the sign there yesterday. The guy was arrogant enough to say "hai baba we put the sign today". Disappointed