Home services cancellation

I cancelled all my home services effective May 9/2024. I gave plenty of notice and was paid in full up to that date (month to month/no contract). On May 10 I got a bill for just Internet (my services included Optik TV & Internet). Called Telus customer service and was told this was an error on their part and the charge would be reversed (explanation that the Internet service cancellation request had not been completed on their end). Telus representative apologized and I assumed this was resolved. Well now it's June and I just received ANOTHER monthly bill for Internet only...This is ridiculous, how many times do I need to speak to someone before this is completed properly? Anyone else having this same issue? Very frustrated 😞