Harrasing Phone Calls

How many harassments calls should you get from African Bank for an already payment schedule in place, I have 120 calles for the past 3 days on my phone. I told their consultant three months back I am not going to change the deductible amounts and I prefer they keep to our arrangement until the loan account is paid up. I am working for a very recognize Company and expect that they should stop *****ing time from peoples job to just confirmed the same things over and over, we are paying stick the the damn payment arrangement, should anything change we will make contact with you. I am changing my number as off today I have about 100 called on my phone from 10 different numbers and also my work phone.