What do you do when someone stands you up over and over?

i dated this girl that stood me up 17 times in 3 months and she made excuses like my sim card fell out of my phone,i fell asleep, took to much medication and passed out, my daughter hurt her arm, i let my mom borrow my phone, both my tires got flat, i left my phone in my car and it got towed, i got lost are all those excuses believable. she made me buy her tickets to see martin lawrence in long beach and she told me to meet her there and she never showed up.