Late last night when we were trying to return home from my son's place in Barrhaven to Kanata, we discovered that both my wife's and my FOB would not open the car doors. What to do at 01:30 AM. Called customer service which enabled us to enter car but vehicle would not start with either FOB. A variety of possibilities were tried with help of Raymond at Customer Service- none worked. Tried to use iPhone Tesla App but it had crashed also and, despite of help from Service centre, we were not able to reset password. Eventually car locked itself with us in it. When we tried to exit vehicle sirens went off at 02:15M, much to displeasure of my son's neighbours. Customer Service arranged for a Uber vehicle to take us home, leaving car on the street at my son's house. We were advised Montreal Service Centre would be in touch with us. Today called Montreal Tesla office without much success. I was advised to call Customer service again. I did and told Gary , who was very helpful, that I needed things in the car for work and also needed a vehicle. He called Montreal office to explain situation to them. He mentioned to me that they should call us soon. Well 4 hours later we still had not heard from Montreal. I called Customer Service again. This time Christina suggested that maybe out FOB's need to have their batteries changed. She also called Montreal for us. 3 hrs later still no reply from Montreal! We did go and change batteries and returned to my son 's place to see if our recharged FOB would work. No luck. However I had been able to restart our Tesla App and through my iPhone I was able to open doors and start the car. Before drIving home, I called Service Centre again to mentioned I had the car going and advised that Montreal had still not contacted us. I did not wait to see if FOB's worked and started driving home.