Dell warranty support quality is very poor

I have dell precision 7510, last 2 weeks, my problem is that do not put out the wireless USB of a mouse at the left usb port, so It's stuck there. I have call to Dell warranty (1800545455) to talk with my problem, and they told will fix it for me by bring a new one to replace, and to make sure my laptop doesn't have any problem, they suggest me bring it to Dell LacViet in Vietnam. In here, technician used dell diagnostics, and open my laptop to see. After that, I told him call to the above number tell them problem I have. At this time (17/11/2016 - that was Thursday) they refused me. On that night, I call again to them talk why they told me to fix this problem on Monday but on Thursday they refused me. They told they would call back on Friday. On this day I met a guy called level 2 manager. He told me, I did not have warranty for this problem because I make this. I know this is my problem, but when I told him why Monday, Dell told me will support me, but after that he did not. And I ask I have home service for my laptop why I need to bring my laptop to Dell Office and they only used dell diagnostics (the easy tool I can use easily). And he also ask me when I call to dell, I said that was on Monday morning from 10-11am with my phone number. Why they need this information, I remember Dell have a service record the phone to improve quality. I request me take an email to apologize me about this problem, he told this was misunderstood and he refused, and I told using the recording log on Monday, but he try to not hear my request, and told what do I want from Dell. And I quit my talking with him. After that, one technical guy call to me and ask when I take a phone call on Monday, and have a report. Now on the first day of this week, I have not received any reports from this office, it take more than 1 week to look for 1 phone log which had my phone number, the time, date. So I post here to report the quality support in my country. It is very poor, and especially the level 2 Manager - Mr. Hien (I ask him what is his name) - the way he talked with customer. I also recorded the phone log with him but it is in Vietnamese, If who one I will post it in here.
Supporting chatting is also very poor. Only technical support, and do not have customer service. Taking a chat with support and they give me an international number support. Call it and have a problem with connection, do not call back to customer. In the past, I had to deal with MS Surface, and also had a problem with connection, they call back for me.

My review for Dell:
+) Quality of laptop: 7/10
+) Support service: 0/10

Does anyone else know how to contact with customer service, please let me know?

 

Do you mean your USB port broke physically? Or is it an electrical issue?

Maybe you can try posting on their Facebook website like this person.

https://m.facebook.com/Dell/posts/10206079690990070

 

But... you don't have a warranty case... My understanding is that you broke a USB device and got it stuck in a port.

Support initially misunderstood you and thought it was a warranty case, which they've found out it wasn't. In which they are have rightfully denied you service because it was misuse. Unless you have purchased accidental damage protection, you don't have a case.
Now you're ranting that they won't give you what you want, because someone was rude?

Be reasonable here...