Woodlands — quality issue with woodland sandal

Address:

Woodland Factory Outlet, Near Shanti Sagar Complex, Mysore, Karnataka, 570022

We have purchased Woodland Sandals (Mens) from Woodlands Factory Outlet Shop No.1010, Surya Prasad Complex, Udaya Ravi Road, E & F Block, Kuvempunagar, Mysore - 570023 on 03rd May 2019. We have observed that after use of Sandals the foot palm is getting black staining from the sandals. This is leaving an impression on the skin and it is difficult to clean even with soap solution. This may be due to quality issue. Pl find the pictures attached for reference. Kindly revert back with an 8D report on the possible cause.

I need refund for the product purchased as this has not fulfilled my requirements.
Best Regards,
Pravin T
[protected]