Very unhappy customer

Had issues with tyre that was purchased at pitstop montague gardens. The tyres started cracking on the inside of 2 tyres. Was told to take it to a place for them to access it. Which they did and now they can't help because they say the tyres was driven uninflated which is a load of BS. Very bad service from pitstop and the place that did the accessment. Never buy tyres from pitstop