Leroy Merlin - Extremely poor service

We ordered a bathroom cabinet basin online on 23 June 2022 and it was delivered on 30 June 2022. We opened the sealed unit on Saturday 4 July 2022 and discovered that the side panel was severely damaged. We contacted Leroy Merlin and was told that we could drive to one of their shops and exchange the unit. We luckily enquired whether they have stock and was informed that they had not stock and only expect stock around 20 July 2022. They further informed us that will come and collect the damaged unit in the meantime but they did not till today. We phoned them several times to establish the status of the order without any success. The last call was last week Thursday when we spoke to a manager that promised to look into the issues and will call us back, again, no call back till today. We also forwarded an number of e-mail messages with the same generic response and no feedback. They have informed us during a phone call that we can be refunded but it will take 7-10 working days, an option we did not want to explore. We have renovated a bathroom but cannot use it as the bathroom cabinet is still not resolved nor have we received an update from them. This is really bad service and unacceptable.