We are confused as to why this review is the first time we have heard of the issue, from our records we do not have a text, missed call or email from you so did not have the opportunity to investigate prior to you submitting the review.
Patchy staining like this indicates an agent has made contact with the towel, fading in patches like this not from a dye issue.
We have only seen this at swimming pools with chlorine contact or in private use when a chemical agent such as bleach making contact with the fabric hooded towel.