Web Africa charges after Cancelation of services

I asked to cancel my service with Web Africa, I was told cancelation take 1 calendar month notice, so I gave one calendar month notice. At the end of the Calendar month my services were canceled yet they still billed me in advance for the month of May 2024. When I tried to contact them I found they only have live chat on their website or Whatsapp chat, both of which use Willie the bot, in the beginning a agent Emily K was assigned my issue and I was told I had to pay till the die date for cancelation, at that point my services were already canceled and I was up to date with all my payments. The second agent Jesmei G tried to help me by making me wait crazy long before answering my questions eventually they put me through back to Willie the bot, since then I have not been able to reach anyone from Web Africa except Willie the bot... no help at all! So I will have to just let them take my money that they billed me for nothing??? VERY POOR SERVICE, bordering on *****!, I have now decided to move my business to another ISP.