MTN is *****ulant !!!

I gave notice by email on 19 March 2020 that I dont want to continue with my contract with expire date 24 April 2020 ... a few days more than the required 30days. I only receive first feedback from them on 3 April 2020 asking me security questions. Today 9 April I receive a call notifying me that only on 25th April I can request the number to go over to Prepaid as I stated in my email of 19 March that I want to do that. If I wanted the contract terminated on 24 April I will forfeit the number ... gladly I accepted as it is a long time now I am unhappy with MTN service as they stole over R600 airtime from this number with a previous upgrade. Anyway, just to receive an email now confirming that my service will be terminated 3 May 2020 per 30day notice. Are these people incompitent or what? I gave notice 19 March 2020 and not on the day they decided to respond to my email ....