More questions about thredUP

I received the wrong size on my order. I want to return it for no charge whatsoever. How do I do that? It is hard to contact any one on your site. How do they know who is sending the bag I see I shouldn't sell with this company but are they okay to buy from? Recently saw a bad purse or tote purchase. What about clothes recently? I was going to send in a bag of clothes. Most are new or like new but not necessarily designer labels. Am I wasting my time? Has anyone from Thred up respond to e-mails. How long does it take to get debit card for payout? How do I go about returning an item? The boots I ordered were advertised as size 8 but when the boots arrived they were a7. No way do they fit . I placed an order on 8/12 and on 8/13 it looks like the order was cancelled as the money that was charged to my account was put back account. Why? About how long does it take for you to receive your items? Why hasn't google banned this dishonest website yes where is the refund for 80.00 I send back june 17th and all i get is pennding