Hello please help if you can , I am worried sick , I got a letter from the above , the letter states We need to talk to you about whether you are living with a partner , I claim tax credit as a single person , they are saying that they have evidence that there may be another ault living with me , I do have a bf whom stays 3 days a week , they wish me to call , and are asking in the letter for Bills, tent from 06 April 2014 to Jan 2015 , scared they are going to horrible on the phone not sure what to make if it , feel sick , any tips or help would be great thank you