false advertising

i have send 2 emails to them regarding my complaint. 3 days have passed i had to contact them again, myself. I paid the 250 on the 25th of September, thinking the data plan will then last a minimum of 30 days. which is a month , on the 1st of October they send a notification that i have to pay another 250 inorder for my data to be activated for the month of October. since this is no contract and solely a month to month basis, how is it then possible that i am in "arrears" as they would put it. i have spoken on their chat system to a Hassina , who then asked for proof of payment. i gave the detail, account number, time it was deposited, and then all of a sudden the chat is cleared. i have to basically start over and ask for this person, they don't contact you when you have a complaint , nor resolve the issue. i feel ****** as this is something i paid for and yet i don't get what i paid for.