FALSE POSITIVES AND INFERIOR PRODUCT MEDIC+ PREGNANCY TESTS

I am BEYOND dissapointed with Dis-Chem Pharmacies Medic+ inhouse pregnancy tests. In the last day I have experienced the following: I purchased a pack of the Digital Test 3's Medic that come with the digital body and 3 x changeable sticks. I recieved a negative result, and retested the following day. Which then Showed YES+. The screen then went blank and completely unresponsive, I tried to test with the 3rd stick and the screen stayed blank. So the battery installed couldnt last for the duration of the 3 tests. Cool whatever, I got a positive. I then purchased a ClearBlu Test and it showed negative. I then FOLLOWED that test with two double packets of the non-digital normal tests from MEDIC+ of which only 2 of the 4 were usable. The first test of each pack didnt "Develop" the red inidcator liquid just never went firther than 1/3rd of the test screen. And the other 2 showed negative. I then googled it and found many other women have experienced the same with these tests. HOW ON EARTH are these products still on your shelves? UTTER waste of money and emotions.