I Could Not Return My Fantom Vacuum Despite Using No More Than a Test

I purchased a Fantom brand upright vacuum cleaner via Trendyol from the seller 'Buluttabul'. I opened the package and checked if the product worked, but the suction power was not sufficient for my needs. Exercising my 14-day right of withdrawal, I carefully repackaged the product and returned it. Despite this, I was informed that my return was rejected due to signs of use. Trendyol’s customer service failed to communicate properly and did not provide me with clear or helpful information throughout the process. After this experience, I no longer plan to use the platform.