Why you may want to think twice before falling for a high-pressure sales pitch

(WXYZ) - A knock at the door recently interrupted Gretchen Kennedy while she was working from home.

When she opened it, she saw two young men on her porch.

"They said they were selling magazines and I said I wasn't interested and I said that I declined several times."

She finally caved in because they said it would help charter schools, but the magazine never arrived. When she complained, the company never responded.

Our investigation reveals the number of complaints the Better Business Bureau received about door-to-door sales more than doubled in a year.

In 2012, the BBB got 600 complaints and in 2011 that number more than doubled to 1,300 and it's up again already for 2012.

Complaints from consumers who say they never got what they paid for and were victims of aggressive sellers using high pressure tactics.

What are the newest door-to-door products racking up complaints?

• security systems
• produce and meats
• cosmetics
• cleaning supplies
• photography sales
• magazines

We found the company Gretchen paid has an "F" rating with the BBB and more than 170 complaints.

Go to our website for more tips on how to deal with a door-to-door salesperson and more information about your rights to dispute an in-home sale:

http://www.ftc.gov/bcp/edu/pubs/consumer/products/pro03.shtm

http://austin.bbb.org/article/dont-get-heated-by-high-pressure-door-to-door-salespeople-34392