Very very poor service

I tried to cancel my contract with Vodacom the 6th of March 2018 to move to a cheaper network. A Lady at retentions dep helped me and asked me if they can not see if they can do a deal match for me so that i can stay with Vodacom. Today is the 3rd of April. In 3 days it will be a month since we stared this proces. I asked her to make sure that this will be changed by the end of last month so that i can start the new plan this month but still this was not done. I have phoned vodacom every day just to find out what is going on. Not once do you come back to me and give me a update on this. I can not phone vodacon any more as they say i phoned to many times and if I want to speak to them I must pay for the call. I do not know how you as vodacom try to keep clients. I am very unhappy with you service at this stage. I will now wait till the 6th of April and by that time i will ask you to please end my contact so that I can move to a company that works. Please if I can get a call from any person at vodacom that can help me with this as I can not phone you anny more. **********