These folks in early 2016 took over our Telna SIM cards which we had used as our main SIM cards for about 5 years. Since they took over, nothing but problems - to the point that they don't even know what our Telna SIM phone numbers are! They kept listing our outbound caller ID numbers, which on Telna you could set to anything that's convenient to receive inbound calls. In the meantime, it turned out that our original mobile numbers were dropped and given to somebody else. Worse yet, in around 6 phone calls over three months they could not fix the issue, for example by giving us new numbers, always saying "an engineer will call you back within 24h". But it never happens - and last time I even tried to track down the engineer I talked to the day before, Roel. He promised me he'd call back the next day (after being already 3 days late), but he never did either. Recently they come with the excuse that I have an outstanding balance of 30 some dollars and that's why the SIM cards don't work, which isn't the case at all. So today I cancelled in frustration - and was told indeed I don't have an outstanding balance - of course. And yet, when I go into my account, it now lists an outstanding balance of $80.00! I call back and am told that this is also a mistake. Worst. Company. Ever. Telna, why have you forsaken me!