Trashy screen protector

Bought a screen protector for my new phone two months ago after they literally bagged me to. Me buying the screen protector, I was expecting it to last more than just two months. The screen protector started cracking way before the phone started falling. Was surprised by that but I overlooked it, and continued using it. A couple of days ago, the trashy screen protector just fell off. I understand cracking but was really not expecting it to just fall of. So I went to the retailer, at Vodacom 4u at Sunnypark Pretoria to get assisted with this and was hoping to get a new screen guard. However, I got a person who was not willing to help me whatsoever and **** saying the manager was not around only to find he was there all the time. I bought the screen gard to protect my phone, I never thought I'd pay R200 for a screen guard only to fall off after 2 months. I really feel ****med, since I bought at Vodacom and not the streets thinking its good quality and will last. Unsatisfied customer