BIC pens - sub par defective plastic casings on over 15 pens. No response form BIC

Purchased a bulk packet of BIC pens 20 plus form Makro- all but 2 broke the plastic at the nib is defective and of poor quality - it all breaks and renders the pen useless as you can not access the link to put it into another pen VERY disappointing. I raised this concern on the 28th of April and to date have not had a response from BIC - very disappointed that a company with supposedly a well-established good quality brand name disregards their client's issues and does not even bother to address the matter. So much for brand loyalty looks like I need to find a new stationery supplier. Unacceptable.