Useless customer services

In Feb 2024 I bought two cans of doom through Woolworths Dash and found that one dod not work. I complained to Pioneer Foods customer service and had to send purchase details, photographs etc. It took several e-mails and telephone calls to get a response that they had sent me a voucher. However, they used the wrong phone number to send the voucher. I gave the correct phone number and was promised a voucher the same day. Well, never happened! So they obviously either forgot or sent it to the wrong number again