Buyer unneccasarily opening cases putting seller in Hassle

[kalapudina11]

We sent the buyer with his ordered 4 items (shirts) exactly as described in description. Buyer said he having problem with fitting the 'L' size and requested if XL could be given.

Buyer had option of replacement or refund, the first time but buyer chose former. That we could have contested since we sent the standard 'L' size as per item description and the item had no defect whatsoever.
Still, as gesture we agreed to replace with XL at our own cost.
Now Buyer claims that the quality of shirt material is not good. How is this possible ? Why wasn't refund claimed 1st time if quality was not good ?
We want ebay to look into the matter asap. This is a loss to the seller both time-wise and monetary angel.

We believe we have spent so much time communicating with the seller and working out with him, even offering a full refund 2nd time to avoid all the hassle. But still it is seeming like a very difficult buyer as he is opening cases and escalating to trust and safety. What is this ? We have 100% positive feedback score and have shipped items all over india. Now should we sell items on ebay or spend time on replying on ebay resolutions. Even as we have talked to buyer on phone, email and sent him emails with new stock photos to select from , We believe we have done more than enough as customer care , still the buyer taking undue advantage of this.

Ebay sends a mail that seller responds within 72 hours otherwise account will be suspended. What is this ?

[mobile-phones-etc]

well, thats how it is. I empathize with you. But thats how we have to play it. just ask the buyer to send the product back on his own cost. deduct all shipping charges. and refund the amount. and for future purchases, block the buyer.

Thats all we can do. buy genuine mobiles at unbeatable price.
http://stores.shop.ebay.in/Mobile-Phones-ETC