De*****ed by Cell C

I received a SMS saying that I am due for an upgrade. I went to my local Cell C store in Beacon Bay, East London, to get my new phone. I was helped by Keagan whom said that I can get a Sony Xperia 10+ for even cheaper than the R428/month I am paying now. My new monthly installments will be R349/month which I was very happy with. This month I got the surprise of having R1052 deducted from my bank. When I went back to the Cell C store I was told that it is in fact my new monthly subscription. I then called Cell C direct and was informed that I did not upgrade but signed a new/second contract with them for the next 24 months. I now hold 2 contracts with 1 phone and R1052/month to pay for the next 2 years. Cell C was not very helpful in how I need to solve this situation. I am very disappointed after being with them for over 10 years. Please be careful when you sign forms with your cellphone service provider, especially thinking it is an upgrade, you will be held liable for your mistake! I feel that I have been de*****ed by Cell C!