FNB and RAIN frustration

My FNB credit card expired in February, I'm been paying my rain subscription using a link, however rain has been trying to bill me on my credit that has expired. Paid 2 months subscription because I couldn't pay in May... was only able to use the router for 3 weeks... Ive requested a cancelation since mid July and nothing is been done. Everyday they busy on my expired credit card trying to debit which om being charged R8 declined fees for transaction by FNB while my card has money, im upset with FNB charging me this amount as Ive reported this mattrr to them and they are aware that Rain is truing on an expired card. I don't understand how FNB canLloww this madness when the card has expired and they chaging me for this. Rain doesn't have my new card details for a reason. FNB is requesting a cancelation letter and this ****** useless support team at Rain is non responsive. They lodge tickets that are never attended to. Im so frustrated and FNB are not helping thinking of moving my account from FNB because of this.