Unfair treatment despite full made good on the due date

I have an arrangement with Telkom to debit full amount due on my cellphine account ***. However I realized after the effect that funds due in March were insufficient to process the debit order of R911.99 and was reversed.. Amount due on 25 April 2023 invluding the arears amounted to R2587.80 and debit order successfully processed in full. On 21 April 2023 I settled the overdue amount for March. Effectively two paymdnts for March done. On 4 May 2023 got an SMS informing me that my service wikl be interrupted though money is in the Telkom bank. I called care centre. At 09h30 got an SMS from them confirming receipt of payment and service will be restored during the day..The account remained suspended for the whole day. Called care centre and this told that it takes 48 hours to restore. Today, at 09h15 my acount service is still not restored though full pament included in the debit order of 25 April 2023 as well as additional amount of R911.99 ion 21 April 2023 n their bank. I feel this is victimization