Where to start this this tinpot money grabbing com...

Where to start this this tinpot money grabbing company. The delivery drivers say they tried calling me 3 times yet muggings was waiting by the phone all day, after waiting around i placed a call to the customer services and spoke to a girl called Georgia, she wasn't willing to help at all, then she broke the data protection act of 2018. In this current situation i believe her lack of compassion just shows the incompetence of this company.