Yettel and Telenor before yettel doing the same thing in Serbia. They have been cheating customers. I signed in for mobile internet contact for 2 years but when we came home and tried internet the device didn't work so we recorded everything and went to Ada Mall in their subsidiary where we signed in contract to appeal but they didn't won't to cooperate and just turned us off. At the end we couldn't get another internet mobile device and they told us that we can't broke the contract so we decide to take legal action. Now we have device which doesn't work and we can't use it and we have obligation to pay yettel monthly something which we can't use. Yettel is a scam company. Learn something from my example and don't cooperate with them.