Vodacom is pathetic with service

I am soooo fedup with vodacom. I am a client of about 15 years. I had 5 contracts. I did a voluntary surrender because of loosing my job. But never did i ever skip a payment on my contracts nor pay late. I always made sure to pay my contracts on time. They made me cancel my contracts one by one because the didnt want to risk it. Now i want to upgrade on a number but i did a sim swap on the 3rd.now i cant upgrade. Why didn't the guy at vodacom tell me i wont be able to do a upgrade if i do a sim swap. I am thinking of canceling this contract aswell. I am really thinking to go to another service provider. I am so fedup. Cant deal with this vodacom ****.