WRONG BILL

useless call center. i spoke to 11 agents about the same issue since 4th January. they billed me wrongly, even confirmed that its was system error on their side. the amount charged will be reversed.. its been a month now, i get a reminder to pay my February subscription, and that error amount is still there..i paid my monthly subscription only. I got a message that i must pay that error amount or i will be disconnected come 2nd February..i tried to fix this for a whole month. spoke to over 11 agents, escalated to finance over 10 times, still nothing. Now they want block me because of their own system error. I am so ****ed