Harassment from Finchoice

So I have an account with Fichoice, I’ve been paying monthly however there was a period where the finances were abit hectic so I skipped 2 months. When they called me, I made the arrangement that I will pay the following month. They then told me that because I can’t pay this month they are going to keep calling me!!! I don’t know where they expect me to get the money from because their reason for calling is to make a payment arrangement and that is exactly what I did. These people call me 10 times a day, weekends included!!! This is total HARASSMENT now because everytime I answer the phone to tell them I have already made arrangements, they tell me that those arrangements are for next month, so I don’t know where they expect me to get the money from this month!!! 10 CALLS EVERYDAY, weekends included.