Popz have bugs in their popcorn and do not compensate you or reply

I am a loyal consumer of Ster-Kinekors Popz Lite popcorn. I buy it often. I purchased 2 packets in January and when I opened them they were FULL of bugs. I took a photo and emailed them on 25 January. No response. On 28 January I complained via Facebook Messenger and they responded and said they would contact me. 17 February, after multiple follow ups I was finally contacted and as compensation and apology offered a hamper. On the 12th of March I followed up to see what happened to the hamper - no response. I then followed up again on the 22nd March to both the email and Facebook accounts, still no response. This is terrible service and the least I expect is to be compensated for the amount I paid for the 2 packs of popcorn.