Seller trying to scam us on ebay?

So my sister sold her iphone on ebay last month and buyer is responding now that he never received the phone and now he open a case to get a refund(The guy seems like he owns a store or something since he has like 5k stars). Problem is she didn't asked for the tracking option and she mailed it like that. I know she basically screw her self because now the buyer can win any case since there's no proof whatsoever that she sent it except for a receipt. My question is, is the seller trying scam her? I mean the phone could be in his hands, and if is not where is it then! We haven't received it back through mail. What is our options if we have any? Can we send a refund with no phone in our hands? We only have three days to solve this case. Thank you in advance. (No useless answers and no need to reply the obvious just helpful answers)

How to put ringtones onto iPhone?

I'm trying to put ringtones onto my iPhone 4s, but there are no ringtones tabs in my iTunes. I've got the files converted to m4rs, but can't figure out how to put them onto the phone. Any suggestions?

Verizon iPhone 4 very slow with 3G reception?

Even when I have a full 5 bars of reception on my Verizon iPhone 4, it can still take a very long time to load even the simplest pages or send messages. Usually when this happens, the circular revolving loading symbol that appears next to the "3G" will lag, it won't stay consistently turning which makes me think it's having a hard time loading pages. Also, my messages will sometimes send twice or reach the recipient hours after I send them a text.

My Iphone Pandora app will not rotate to landscape mode now, Any idea how to fix?

I have tried to reinstall it
I have did the new ios upgrade
I made sure portrait lock was not on the music settings, (the native music player works when you rotate it)

My last resort is to back up my iphone and reload it, I really don't want to do this, any options that I'm overlooking?

It is an Iphone 4s and is now at IOS 6.0

IPhone won't send pictures to non iPhone users?

I have had an iPhone 4s for about a year. Just within the past couple of months I have not been able to send or receive pictures from people who don't have iPhones. I have tried sending pictures to different people who have different phone and different service providers but nothing works. I don't think it is the plan I have because I have an unlimited date package and my fiance, who is on the same plan doesn't seem to have this issue. I have looked around on the internet with other people who are having the same problems. I have checked all my settings, deleted any camera apps besides the one that came on the phone and have reset the network setting. It still will not work. I have updated my system to iOs 6 thinking that was the problem of a new update coming out, but there still is the issue. Is anyone else having this problem and what did you do to solve the issue.

Added (1). I did what she said and my cellular is on, so that is not the issue.

Can I flash my iPhone to Metro Pcs?

I really want an iPhone, but I don't want to have AT&T, Sprint, T-Mobile, or Verizon wireless as my carrier because it's too expensive. I was thinking about just buying an iPhone and then flashing it to Metro Pcs because I've read a lot of articles about it. Does it really work? If I flash my iPhone to Metro Pcs, does that mean I'll still have unlimited text, talk, and internet? Because that's what I have for Metro Pcs right now.

Laptop loses broadband connection?

We recently bought a refurbished (good condition) laptop for the children which has been working for several weeks until now. Every time they connect to the Internet (BT broadband) it cuts out and the orange light flashes until we disconnect it. We have another laptop, iPhone and BT Vision which all work well without any loss of connection. What is wrong with our new laptop?

Linksy router password problem with Wi-Fi/wpa setting?

I was able to setup my linksy web password and now my wireless has a code which worked fine when I tried to log in with my iphone. Problem is that my pw won't work when I try to log in with my iphone. I went to the 192.168.1.1 site and double check and my pw was the one I was typing but the password on the site's tab has longer digits even though I kept retyping and saving the password. I did some research online and I tried to go to wireless and change it to a Wpa instead of web but my linksy homepage isn't the same as the one I seen online, my wirless tab doesn't have the options to change it to a wpa. Any ideas how I can log in with the pw i created? And why my linksy page don't include the options as others do?