False communication from Agent

Been a customer of vodacom for 20 years but I think This was the cherry on top..i was called to upgrade as my current contract is about to expired.please note this is a SIM only package I currently have with Vodacom.After asking the agent to please reinstate my new 24 month contract exactly to what I had she said sure.I even mensioned the data and free minutes I was getting and the total I was paying monthly.then she advise sure..everything will carry on just as is.then I see on my new bill the discount that I was getting on my previous contract was not app****.aftee numerous calls to the call centre and speaking to a cancellation line managee they said they will get back to me as they need to request back office to pull data..day in day out i call for any feedback juat to get promised by the line manager he will call me the next day..after 10 days of not getting any response(note this is a cancellation line manager I was dealing with)I eventually said well I have given you guys 14 days to look onto either tranferring the discount I was use to or I will cancel.today I cancelled still in the valid cancellation period after renewal and was told I need to pay a cancellation fee..and that after I was hold up by no response from a line manager and countless efforts and calla to vodacom that I want to cancel if they cant transfer the discount to current contract..I was juat amazed how a company is really not interested in business as a clie t needs to do the calling all the time.sorry vodacom but you lost a client forever after receiving business for 18-20 years..and trust me I would not recommend vodacom as a supplier.