We had experience working with this service. At first, we were happy that the prices were significantly lower than those of competitors, but after a month, we realized what was going on. Imagine how you feel excited, only to receive calls not about car repairs, but about earplugs. It's just awful! We started complaining, and eventually found out that their numbers don't stay idle, meaning they don't sit unused for a month. They are almost immediately put up for sale. By the way, we found the website for those earplugs, and they still list the phone number we bought from Zadarma. We wrote to them many times, but to no avail. So keep this in mind. If you decide to use Zadarma, make sure to listen to the calls and quickly change your number if you start getting calls about earplugs or something even more unpleasant. In the end, we changed our numbers, but the bad taste remained.
