Worst customer service at Vodacom

We have moved houses. Vodacom send us a rooter plus a ****le via a courier. We did not accept the rooter and ****le because we already had a rooter and still using the same rooter. 1 November 2023 they deducted the amount of R1 579.07 which included the R599.00 for the rooter that we never accepted and was returned. On the 2nd November 2023 I phoned Vodacom to look into the matter. I was on the telephone for 2-3 hours to talk to someone to solve the problem. They promised to sort out the problem within 7-14 working days and to refund the amount that they have overcharged me with. They never did anything and did not keep their promise. Beginning December 2023 the same problem occurred and again they did nothing to solve the problem although they admitted that we were charged for 2 x rooters and it was their fault. On 27 December 2023 I phoned Vodacom again and spend 4 to 4 and a half hours trying to speak to someone who could assist me again to solve the problem. Once again they admitted that they could see on their systems that they never did anthing to rectify the problem. Once again they admitted over the phone that they were at fault. Now the next debit will be +- R2000 which I have to pay before they can look into the matter again, and it will take 7-14 days to give me feedback. I wanted to cancel the contract with Vodacom but was told that it could not be done as the account was in arrears due to their fault. This is absolutely not acceptable and very poor customer service. After 20-25 years being a loyal customer of Vodacom I could not get the matter solved in any way. Due to this very bad experience I would never ever recommend anyone doing business with Voacom.