Line closed without my knowledge and explanation

I have a contract with vodacom for some years now - this contract has a few numbers in it and is update, has never missed not even a single payment. On Thursday (17th November 2022) night at 21.45pm I receive two smses, one of the sms says - your number has been fully locked, if you didn't authorize this call 135, is in the night and I was sleeping, so I thought I'll follow up in the morning. The following day Friday the 18th - I got busy and forgot about the sms, during the day I was trying to get hold of my husband and his number was not going through, I couldn't even leave a message or anything, the line would just cut. So in the afternoon when he returned home, he also explained that he can use his phone at all - he can't make or receive call at all. Around 10pm i call the call center and spoke to Thandaza and related the matter, she put me on hold for almost 8 minutes without coming back to me, i drop and called again, I spoke to Nora, who immediately notified that one of my lines has been closed by the ***** department for investigation, and that they are no notes left on my account as to why??? This is happening, she furthermore said that - ***** department will come back to me on Monday - like why, how - does vodacom close a line and no communication whatsoever is done with the client, and the audacity to want to come back to me after 5 days of closing my line, which is paid correctly and is up to date. I asked Nora for the reference for my call - and she sarcastically said - you can use the number you called from????? Like I'll call back and relate the same story to another *********** agent. At 11pm I get a call from Thandaza wanting to explain why she put me hold so long, he reasons were so stupid i don't know if she took me for a fool or what. I told her to get her manager to sort out my account or at least find out why my line is under investigation. Is Saturday now 11.04am i still haven't heard anything from vodacom. If you ask me - this is the worst company I have to deal with, every single time I have a query. They are the worst service providers