Harrasing

Here another group that keeps harrasing me on a daily basis at work,home even in my sleep they making my life a living hell, they sge my account from a group I was paying under and know they claiming I should pay under them, I told them several tomes that I paid my accounts but nk they want 10800 from me, their consultant are threatening me at work about the payments that I won't do, I'm currently opening a case against them. I'm not happy at all with their treatment and the fact that they want me to pay an account that I have already paid. I honestly hate everything thing about this company