Lack of Communication-Bad Customer service

Good day, I am very dissapointed in Simba, as I purchased a big packet of Doritos on 7th December 2020,I then found a hard, black object in the packet, which then I made contact with their customer service to log complain and attached pictures accordingly. They madw contact with mw only in February 2021 and I explained over the phone again and answered all questions asked at the time. I was advised I will hear from them in 21 days, and should I not hear from them in 21 days, I should call, which I did in May 2021 and to date I havent received any feedback or amends from them. I feel this is very unprofessional and unacceptable as I am a loyal customer to the brand and the way they go about handling my complaint as if is not important, which is not right at all.