Vodacom Billing of Horror!

I took out a contract in October 2018, got 2 devices and 2 sim cards for R199 per month x24. i was told no connection fees, but they charged me R323 for connection fees and something else, I disputed this and it was only sorted after I went to tweeter to complain. in January 2019, Vodacom start billing me R333 for the very same R199 contract. I was made a fool from one department to the other for 5 months till in May they just cancelled my contract and made it prepaid. now I got an email from the attorneys saying legal action is taken against me for R846 that I owe vodacom, mind you i am waiting for a resolution to this problem!!!! Being loyal to vodacom has actually ruined me!