Telus billing system wrong

Telus is telling me that my last two payments (which I confirmed successfully went through on my credit card) were returned when they were not. I called my credit card to confirm the payments actually went through and they did, I have transaction numbers and approval numbers. Telus keeps telling me I didn’t pay and no one is listening to me. I have two separate accounts, one for mobile and one for home services. I changed the credit card for both and I have had no issues for my mobile account but Telus is telling me my past two transactions for my home services account didn’t go through, but how does Telus decide a transaction didn’t go through a month and a half later? After the second transaction did go through at that. Waiting on hold AGAIN wasting my time for money I already paid. The customer service is non-existent and after being a client for 8+ years I’m so disappointed.