Poor service.. Will not recommend them to anyone

On the 28 December 2023 i went into the store to cancel my contract, they struggle to get to my account, afterwards it was discovered that there is no end date on my contract, they explain Vodacom moved over to a new system and that the date did not filter through, they will have to update it and contact me, they never contact me, in Jan 2024 i phoned again, spoke with 3 people again telling me they will phone one back, I stated that, that is an internal issue and its not my problem, I phoned again on the 5 Feb 2024 and finally got someone that was willing to help me, after explaining we conclude that the contract term is over and that the contract is now canceled and i owe vodacom nothing. Lately i got calls tell me dat i am handed over to debt collection telling me that i am liablefor the Feb billing because it invoice was already issued when i canceled, i explained i was canceling this contract since Dec 23 and that i gave them notice way in advance and that they should listen to the recording of the 5 feb 24@ 9. This morning i got a sms from my credit score and they have make arrears 4 months