RELIABLE ASSISTANCE NEEDED FROM VODACOM

I am trying to port from Vodacom to MTN due to poor network coverage in my area. I called Vodacom and they told me my contract stopped on the 27 June 2018 so I went ahead with porting. MTN had problems and I went past the 27 June and had to change to pay as you go. I went into the shop to change to pay as you go and rica my pay as you go and was told that I could not do this the day before it was due, but had to do it on the day. We had an accident on the day but still made it to the shop in the afternoon and I was told that I had to do it over the phone! I told them tht I had been told that I had to come instore so the gentleman called for me. I was then told by the shop assistant thaat my contract only ends at the end of July! Why am I being told different stories regarding termination dates and procedure?? Is ther a way that I can post my number from contract to contract earlier and finish paying vodacom at the end of the month as just move to MTN to finish with all of this red tape and uncer*****y - not to mention bad service and information?? I don't know what other platform to use seeing as I get a different story everywhere I go although I have to say that no-one has contacted me from Vodacom as yet from my last review - except to upgrade my contract!! SOMEONE PLEASE ASSIST!