Hello Mhadirakib, thank you very much for your help
Yes, they respond in the live chat but in my case I have two or 3 open conversations in the chat for more than 24 hours and they don't respond, it's a live chat that doesn't respond in live, they appear, they ask what the problem is, we reply the situation and they don't respond just after a few hours, or days,...
I'll try to solve it via email, thank you very much