Dear-Lover Did not refund my money for my return fujian China Internet

I made a purchase at Dear Lover on 4/28/14 in the amount of $201.23. I received the order within 4 days. However, the quality of the merchandise was very poor. The items did not appear as the items on the site and they had tiny holes and threads hanging from the them. I contacted Dear-Lover and sent them pictures of the items that were flawed and informed them of the low quality items. They said I could return them for high quality items or for a refund. I sent the items off on 5/3/14 in the same box that was sent to me. My USPS tracking number stated that the items were delivered on 5/26/14 at 4:35 pm. However, Dear-Lover claims that they didn't receive the package and that I can not receive a refund or additional items. They told me I sent the items to the wrong address but I explained to them that it was impossible because the items were shipped in the same box that was delivered to me. Now, 6/14/14, they are still stating the items were delievered to the wrong address when the USPS tracking number is stating otherwise. They stopped emailing me and they won't issue my refund. This has not only wasted my personal time but it has affected my business as well.