Poor Vumatel service of payments & reconnecting clients

I'm a subscriber of Vumatel unlimited Fibre. I downgraded my package from R249 to R150 but haven't been connected since Monday 4th, November 2024.O tried making payment through the payment link on their website as I realised they didn't deduct the R150. The payment keeps getting declined though I have enough funds in my account. Been back an forth with their consultants & I called them bank, only find out the amount that keeps declining is R249 & not the R150 that is stated in my package & what I should be paying. I'm getting charged for the declined transactions & have to keep transferring more to keep the R150 available. I gave this info to the last consulted who said payment process is showing on their side & I should be reconnected by the end of Tuesday as R150 will be deducted and not R249. This morning I got another declined text from my bank & declined charges deducted by the bank, so I had to transfer again. So had I had R250 in the account I use for my Fibre subscription, Vumatel would have ripped me off into paying for a lesser package (R150 for new downgraded package) with a high amount of R249 (previous package). They're emails is not working & I was reverted back to the watsapp chat that is not helping but givi6the same story & promise.