Call direct harassment

I have a call direct loan which I have been paying every month. I have NEVER not paid an installment. I have always paid no later than the 5th of every month. Since the beginning of this year Call Direct would have their consultants phone me from the first of every month. Some of these consultants have the worst ever attitudes demanding to know WHY haven`t I paid and What have I done with my money.I am normally very decent but after the third of fourth call in an hour`s time, and after dealing with one of those very rude consultants I loose my self control and by the tenth call I simply ignore the calls.I have paid my installment on the third of this month. I received 39( thirty nine) missed calls from call direct yesterday, apart from the three that I answered!!This is HARASSMENT!! Totally unacceptable!Please tell me how you expect of me to be calm and collected? It is useless to inform the consultants that I am making a payment or have already made a payment as they always have answers ready as to why they will continue calling.And why do I still receive offers for loans from you if I am such a risky client? You just had to phone me 39 times yesterday? I have already received my first sms for the day.Yesterday I received 10!!! A ridiculous 10 AND after I have paid. This is totally unaceptable