Extremely disappointed with service!!!

I have been on prepaid with another service provider for a very long time and decided to port my number to Vodacom since their signal seem to be the best. In the first of June I did the port and followed all the instructions given by the representative at the Vodacom shop. The next day I was able to make phone calls and load airtime but no one can through to me on my number. I went back to the shop and was told to wait another 24 hours, this did not work and I phoned customer care the day after that. After speaking to more than two consultants, I was told to do a sim swap as they think the problem is with the new sim. I did the sim swap but nothing changed as I can still only phone out. This forced me to buy another sim card with a new number which is exactly what I did not want to do as I want to keep my number which I have had for decades. This is extremely frustrating especially if someone need to get hold of me in case of an emergency which were the case end of last week.