Vodacom unprofessional and inadequate monopoly

I was away and late for my payment for my 3-4-19 account which should have been paid on the 1st. Immediately on my return on 08 May 19 I paid the account and received an sms " Vodacom: Thank you .... confirmation that payment has been received.... etc Today 10 May I received an email from Vodacom Subscriber Collections with no date on the letter and signed by a squiggle with no name "urgent notification..." - to pay the above account or they will cut me off. So evidently there auditing system does not work An Unprofessional and a suspect monopoly organisation - no wonder the cellphone signal in many areas has been compromised with this kind of capacity