Leroy Merlin Poor Customer Service Instore or Online

I ordered 3kg rat poison blocks online but received delicery of rat grain poison which was received on the 6th September. I immediately raised a complaint with them and they collected the incorrect item on the 8th September. I continuously followed up the contract person Khensane and it is now 3 weeks later and I am still waiting for the correct replacement order. Each time I follow up i am told that the query has been escalated to the manager but no further feedback is received from anyone. There is just no customer service from Leroy Merlin.