Deceptive agents

I have been with Vodacom since 2021 and I never had problems until last year when i add on to the contract. The initial fee increased without notice, mistake number 1. Mistake number 2 they don't send the statement on a monthly basis, they just send the bill amount. So my biggest problem now is that during March 2024 I get a call from one of their agents, they tell me of a promotion that they are running. So I agree to the promotion because it meant I will get increased benefits and a "free" gift which is a voda cellphone. So I get the "free gift" and month end I see that I have received the extra benefits. So my problem starts when i see that my bill amount has increased, I go to the offices to check what's happening and they tell me that those agents targeted people who are due for an upgrade and they upgraded me without me knowing. I had to call the call centre and someone helped me out but I still have to pay that huge bill this month for an upgrade that i was not aware of.

Vodacom should be aware that their agents use deception to get customers and if this continues they will lose customers. My advice just go to their stores and never agree for anything via the telephone.