Ordered parts but still waiting for delivery - No customer service - Renault The Glen

We have ordered parts from Renault The Gen on the 12th of April (paid cash for the part) nd still waiting for any feedback. When we ordered the consultant mentioned that the part will be availalbe within 21 days. Its now a month later and no feedback as yet. We have visited Renault The Glen on various occasions and still waiting for any feedback. I have engaged today with the parts department manager (Balan) and al that I have received was the call centre number to follow up on my part ordered (Wokr in progress number 39924). I am not sure what happened to the customer services at Renault. You have received the money, please deliver the part. I will not recommend a customer to buy a car from Renault. This is not the first bad customer experience from Renault The Glen. Renault may I please request that your Customer Services Manager giving me a call to solve the issue.