Upgrade gone bad

Good day Vodacom I have been a loyal client for 22 years, I have not had many reasons to complain but today was the final straw I have been receiving countless amounts of calls to upgrade close to about 20 a day as I am in the medical profession I am unable to answer these calls, so since I have been due for about a year for a upgrade I went today to one of your vodacom stores, my son is also due for a upgrade so it made sense to do it all at once, so I get there and the guy tells me he 1st has to apply for a status update as I am classified as a "bad payer" so that's fine as I did it for my daughters upgrade about 3 months ago, so not a hour passed and I get a sms to say my case is closed so I go back and he goes into my profile and he says I have very bad news you are unable to upgrade as you under debt review, I have never felt so humiliated, embarrassed and anger all at once I mean I was under debt review since 2007 and still managed every time to upgrade what is your issue now you get your money every month and I managed to upgrade my daughters phone and my partner has upgraded every 2 years aswell, never once were we rejected so seriously what makes it different now I still pay even though I am not on a set contract, but its fine we are now not bound to you anymore and I will be cancelling both mine and my sons contracts with you, in the past when I recommended Vodacom as a great cellphone company, well guess what I wont be doing that either anymore. Your service and loyalty towards me as a customer for 22 years is appalling, and please stop calling me for upgrades. Thank you for absolutely NOTHING.