Disgusting service from Vodacom

Vodacom service is atrocious in resolving problems and have a don't care attitude. Notifications were sent in Oct via sms to inform that the twin sim service is going to be cancelled on my contract after 10 years of use. After numerous calls to the call center, the consultants explained that this service is no longer active. I have been a Vodacom Consumer for more than 20 years with several contracts which don't come cheap. The Twin Sim number is linked to all my personal profiles and is also my number for all work related purposes. I work for a very large company and handle all customer complaints and advice. The agents at the call center as well as a Vodacom service provider ensured me that the twin sim number will become a pre-paid number and can still be used. This would have made life easy. On 30 November both the main number and the twin sim number was cancelled and no service at all. I had no network coverage at all. It took me an entire afternoon at a Vodashop to get the main number activated only later that evening. When returning to the Chatz shop in WAVERLEY Pta, the manager tried for 2 days to reactivate the "so called twin sim" to be on prepaid. This is unacceptable. If it would have been changed over to a pre-paid number I could at least leave a voice message stating that my number has changed for everybody to reach me. This has caused chaos and no-one within Vodacom seems to have the knowledge how to solve the problem. It has disrupted my work in such a bad way that I had to tolerate being accused of negligence from my side not to make a plan that this should not have happened by our MD of the company. People are trying to contact me on the twin sim number and the reply is the "number you have dialed does not exist". The implications of this issue is ********** and needless to say a disgrace that no-one is coming up with a solution to sort out the issue. I requested to rather keep the twin sim number and cancel the main number, this could also not be done. All my OTP numbers are going to the twin sim number and it is impossible to contact every one or companies of the number change. I am disgusted that Vodacom did not do their research on the implications this has on their customers. This is now 2 weeks later and nothing has been done to solve my problem. Is this how worthless I am for being a customer for more than 20 years?