Vodacom attrocious service!!

I have in 2021 had the most attrocious service from Vodacom. The following has happened this year:- 1. On 6th Jan 2021 I cancelled one of my contracts after 9 months of not using the number. The contract was due to expire at the end of Feb 2021. 2. I rcd my bill from Vodacom on 13th March for the month of March (the 1st month this number was due to be removed from my Account) - I had been billed for March!! I called cancellations again and got many apologies and was promised a refund for March and cancellation. 3. 8th April again I had been billed!! I called again and again went through the trauma of being kept waiting while they looked into this. I was promised this was escalated ot a Manager who would see to the refunds and cacnellation within 2 days 4. 9th April again I called to follow up as I now do not beleive Vodacom know what they are doing. 5. Tried to upgrade my contarct for my son in Feb 2021 6. It took 6 calls over a period of 2 weeks to get the upgraded phone delivered to the correct address and to get them to change my contact number on their system

What is going on Vodacom? Why the ridiculously poor service? I still wait to cancel my contract!!