Home choice isn’t what I thought it is …

I opened an account with home choice and ordered a 5 pierce bedding, it never reached my home address and they insisted I send them an affidavit to show I didn’t receive the order , I did just that, but till today they are blowing up my phone daily with calls telling my that my account is in arrears, even send me an email saying that I owe them. Kindly assist me as I have also decided I don’t want anything to do with them anymore. They are making my life hell with the calls .