Vodacom ***** department is useless

I'm very disappointed in Vodacom, I'm a client for years and this is the service I'm getting. Someone added cellphone contracts to my exciting contract without my permission. This is now a year ago, it started in Jan 2021 and still going. Vodacom ***** department is useless. Every month they lock my cell phone because I'm in arrears, so no airtime, etc. Not my fault, I pay my contract every month, the ********** contracts are not my problem. I phone them explaining the ***** and then they say I must email the ***** department, you just get a ref nr and that is that. Now I'm asking what the hell, you can't go to a Vodacom shop, you have to call the call center, they are just as useless, put you through to departments that numbers do not exist. I think some of the people working in the call center is not knowing what the hell they doing and the service you get is horrible. Just today I tried calling them, 8 times if I'm not being cut off I'm getting put to departments that do not exist. I can't upgrade and at this moment I just want to cancel my contract and not renew.