I have received repeated calls from a company claiming to be Alliant Capital Management. They have not disclosed what the debt pertains to, however have left voicemails stating there is a matter in their office under review. I am not stating I do not owe the debt, as I have gone through a divorce and am currently a single mother working XXXX jobs to fix previous monetary mistakes, however upon returning XXXX of the phone calls to the number given of XXXX with the case number of XXXX I was transferred to my case manager XXXX XXXX XXXX who would not identify himself. He became abrasive and stated that he was not going to tell me until I gave him my case number even though someone gave him this in the background and he used my name which came up from my caller id. He hung up on me after I asked again what company he was with. I called back and was given the company name and hung up on. I called again, gave the case number and was transferred to XXXX XXXX who immediately hung up. Called back and got the address. Upon XXXX XXXX I have mailed a formal cease and desist letter however this company has made threats regarding what type of action will be taken for failure to pay a debt. They have called repeatedly and it is in an attempt to harass and annoy. At this time I am looking to purse all of my rights under Colorado law for this unfair and poor treatment. After a reasonable Internet search and I am unclear as to whether the address given was even the correct address for this company so the letter sent may be represented as never received because of this. I was given the address by a gentlemen named XXXX XXXX.