Damaged cellphone cover

<p>I recently purchased a speck iPhone 7 cover from ifix (wefix) Tygervalley. I noticed today that the slip resistant grip was starting to come off on the left hand corner. I returned to wefix Tygervalley to swap it for a new cover. They refused to swap it. They claimed that I damaged it by dropping it. I am exceptionally careful with my phone and don't like been accused of something I did not do.</p> <p> </p> <p>Speck also has a lifetime guarantee on there covers.</p>