Going around in circles thanks to uncaring Vodacom!

Before leaving SA on January 18th 2020 for an extended stay abroad I changed my phone from contract to prepaid which would be effective 1 February. On 18 January I enabled sms roaming. On 2 Feb I realised no sms were coming through and my brother who has my power if attorney went to vodacom to get them reinstate the sms roaming and they said I should have done this before I left SA!!!???. This number is used to verify my Gmail and youtube accounts neither of which I can access as I cannot receive the OTP'. I have another number used by my business in South Africa which is on contract for over 20 years and if I do not get a solution to my sms roaming problem soon I will cancel that contract too as it is already up for renewal. My brother has power to cancel the contract and can be contacted in SA on my behalf.