HARRASMENT FROM FINCHOICE

I have a credit facility with FinChoice. I have been having some financial challenges resulting in some skipped repayments. I have explained this to FinChoice literally EVERY SINGLE DAY because that is how often they call me. I have made payment arrangements with them however they continue to harass me. On a daily, I receive between 15 to 20 phonecalls from them, most of which when they call and I pick up my phone, they hang up! I have kept record on the number of "answered calls" from FinChoice and I can confirm that out of every 20 calls a day, ONLY 2 are answered, the rest, when I answer they hang up. I am quite fed up of being harassed by FinChoice and should this continue, I will be going to the NCA as well as the Ombudsman to take this matter further, because I HAVE MADE PAYMENT ARRANGEMENTS however I am still receiving 20 calls a day!!!