Has anyone bought this. I'm self funding libra freestyle but 3 out of the last 4 I've purchased have had problems. I dropped off after 1 day, 2 stopped working after 8 days and today it won't connect to my phone. I know I can get them replaced but it's costing me £103 per month and it's very inconvenient to have to keep complaining. I'm type 2 so not funded by nhs.