I bought a Hoover pet smart and tired to find out ...

I bought a Hoover pet smart and tired to find out why my payments wasn't taken out of the bank. So I tried reaching out to Hoover and was only able to sign my machine up for warranty. I wanted to pay in full but, I never could find out who sent me my machine so I I gave up then today I get an email from this company with a statement and haven't been able to reach anyone. I'm going to try again because I want to pay this bill off I'm in good standing with all my creditors and I want this paid on full. I reached out to this company on several times and only got their voice mail now I'm being harassed by collections agency. Because of their non response of my phone calls or emails.