Worst service for online shopping

Absolutely the worst online service and call center. My order got sent back to the warehouse because of an incorrect code. I called the call center over a course of 3 weeks to try get my stuff. Kept on the line forever for more than 20min for supervisors that are contacting the warehouse, then told they will call me back with an answer, they never do. To this day no answers and have not received my order. I don't want to cancel my order since I bought on Sale and will not get those items at that price again. What is the point of having one line shopping in this time of Covid if you can't service clients properly