Vodacom number ported to MTN without my permision

Yesterday afternoon I received several smses that my number will be ported, My number has been ported to MTn without my permission or even request.. When i got home around 8pm my phone experienced network issues. i tried to call your call centre several times and one of your consultant told me that i need to call MTN to cancel the number on their side. This is really strange, how can somebody i dont even know request this without me being present???? I had to call Standard Bank to block my accounts because they were link to my number, in case these ******** tries to use my internet banking.

Please increase security measures to stop this issue, this has been going on since 2016. This is really NOT on. Please re-activate my number on Vodacom.

Regards Boipelo