Disappointed Customer

I bought x2 six packs of Parmalat Everfresh Full Cream Milk UHT and there were lumps in 7 of the 12 liters. I liaised with Lactalis Customer Care, and they advised me to hold on to the sample for collection and the rest of the milk that I had left over. I sent them pictures of the milk that had the lumps, as well pictures of the milk carton and barcode that they requested. They then sent me an sms, advising that they will no longer be collecting the samples from me, due to the high collection costs from their upliftment agent, however, will still be replacing the products in the form of a Wi-code sent to my cellphone. They then sent the WiCode and I will only receive R50 discount. I then messaged them again, but no response has been received. What do they take their customers for? Imagine! Parmalat/Lactalis do better man. That is not fair at all. I am not rich and can't afford to replace your spoilt products at my own cost.