Vodacom is the worst

My 1st contract I took out with invoice in hand with Vodacom was on the 03rd FEB 2014, took out this contract with no issues at all. When I finished my contract in 2016, I went over to a pre-paid account with Vodacom. Vodacom has since harassed me to upgrade my contract 3 times a month, every month until I threatened them to move to a competitor. The calls finally stopped +- June 2021. Finally now I am ready to upgrade, But I am told that because I paid off all of my debit I do not have enough credit to take out a new contract!!. So in directly telling me I need to put as much financial strain on myself in order to benefit from taking out a contract with Vodacom. Surly shouldn’t Vodacom be looking at how good a client has been paying there bills instead of that they do not have any other debit?

This is truly a sign to me that Vodacom does not need any new business and that I should take my business somewhere else.