What a waste of money!

On a road again! This time with my own bike! Everything went well this time - maybe I'm slowly getting there. (Nevermind the fact that I had to ask my teacher to turn the bike around because of loose sand and tight corner...but once again nobody saw me doing that)
But we lost our nerves with these Scala Riders already before the lesson. Bought these used and they worked fine in the winter, but now - nothing! Voice says that they are connected, but neither of us cannot hear nothing! If somebody wants these, I'm happy to give them away. Maybe someone can fix them?! We decided to use WhatsApp -calls instead and it works!