Harassing a customer

Opened an account through Incredible Connection for a 12 month term,through the term I missed a few payments.<br> However as a client trying to pay off their debt,I made arrangements to pay back lower installment via a debit order they deducted yet still called me and demand the outstanding balance I could not yet I have told many agents I cannot settle but I can increase my installment they have received their funds just the 27th of February yet yesterday the 16th March I am receiving calls non stop at work and at home.<br> Does this company not have systems in place to prevent calling paying customers?<br> Are the policies and Procedures in place being followed?<br> I mean on their statements states settle your account or call in to make arrangements I have done that to repay their monies,I want to understand why am I getting harassed still?<br> I'm sure I am not the only customer suffering from this treatment.<br> what happened to customer service?