R149 contract turned down by Vodacom although we have been customers of theirs for years

I have been a Vodacom customer for years. At the moment Vodacom deduct in the region of R2000 by direct debit from my bank account every month as I have fibre, my phone, and 2 small routers through Vodacom. I have never missed a payment. My husband's phone was with Virgin who have closed down in SA. We approached Vodacom for a R149 sim only contract for his phone, to come off my bank account along with the other debits every month and IT WAS TURNED DOWN. No reason, no explanation. In light of this, am looking for another service provider.