Poor service

I am so disappointed at Vodacom,I canceled my contract long time ago,now when I am trying to buy something in finance then I get a notification that Vodacom appears in arrears on my credit report. Fine,I called to find out and they told me about the amount of R245 that I need to pay in order to fix that and give me a settlement letter,I went to the store to pay that amount and when I ask for a settlement letter,they told me that it will only be available after 48 hours, I waited for 48 hours and when I call they give me another story of another 48 hours and it will appear in my spam folder,it has been more than the second 48 hours and nothing still. I gave them 2 different emails to use just in case (*** and ***) but still. ID *** ***