price lock service

I was on a price lock for 24 months.on R749. suddenly it went up to R769, message received by sms. I call them and be told my contract expire. no decency to let me know. That was in mid January . I call then up today to get price lock to call me and went even on live chat where i received a reference number. When i phone today customer service gave me 2 email addresses that were incorrect . Phone in to switch board and ask to been put through to price lock . put me through to another department. i was at this so upset because it cost me money to sort this out that i have said i sending an email now to the papers about the services if they don't phone me today , and i will do it because i wait now for about 4/5 weeks for them to contact me. so now i am considering it to cancel