Is vodacom agist

I have been with vodacom for more than 15 years. I went this morning to get a LTE router for my adult son who is moving into a residential facility for adults with intellectual disability. This is for his phone and ipad. It seems like I am no longer creditworthy. They refused to offer me a monthly package and would only offer me a once off payment of near 10,000 rand. When I enquired what the issue was the store manager could not tell me what the problem was as this was a decision by vodacom and they were not privy to the information. I am 68 years old but financially very viable with as far as I know no credit mark ever. I can think of no reason beyond my age. My wife has gone to MTN which is her service provider. If I hear nothing further I will move my phone contracts from vodacom in the next couple of days. The surprising thing was that while I was waiting I received two calls from vodacom to offer me things as my current contract is coming up for renewal. I will also contact the SAARP.