Unstable Wifi and ***** contract renewal.

Vodacom changed their WIfi from Uncapped to Capped. Their Wifi is the most unstable Wifi I ever used. I buy data during the month because of their Wifi instability. I made a payment arrangement to pay on the 23rd of October 2023. I paid R1422.37. on thr 23rd but Vodacom went into my bank for the same amount. Why do I make a payment arrangement if Vodacom do what they did. I feel that customers in SA are not protected because in Dec 2020, I ordered a laptop from Vodacom but the sim card was faulty. I phoned Vodacom to collect the laptop. The invoicing was not done properly. I end up owing Vodacom and appearing on ITC as a defaulter.In 2022, my contract expired but Vodacom renewed in a weird way. I spoke to the agent but to me it was not explained property that I am entering into a new contract.