Hello, because I don't know what you mean by not working well, I can only provide you with the following possibilities:

1. First of all, a well-equipped commercial induction cooker is not easy to be damaged or suddenly heated up in normal use. If it is a heating failure of the induction cooker, I suggest you find a friendly commercial induction cooker manufacturer and buy another induction cooker with good configuration, which is durable only after good configuration. The induction cooker only generates magnetic induction to the iron pot to complete heating. The casserole is dirt and can't be heated. I'm afraid the seller you mentioned is also a layman.

2. Secondly, if the casserole you are talking about is a popular iron casserole, rubbing it with a steel ball will not affect the heating, and the thermal efficiency of the iron pot is unchanged.

3. Finally, if you say that your wok is a multifunctional wok with a paste-proof and scorch-proof bottom, it is not easy to use once you rub it lightly. Besides, you also confirm that you have not rubbed it with steel balls. The conclusion is that the wok you bought is biased, or the wok you bought is not an iron wok, which affects the thermal efficiency utilization and cannot be heated normally. If the multifunctional wok is only used twice, it is no longer easy to use. Then you need to find the seller to confirm this product.

I would like to share my humble opinion with you, and sincerely listen to your netizens' teachings.