Non existant after sales service

I bought a remote control monster truck with the Hobby Group via Isabella Garcia. This is on a monthly debit order. However this company's after sales service leaves much to be desired. Firstly I was supposed to receive the item after my first installment, however they were still waiting for something and I had to wait. The eventually when I do receive the item on a Monday, it worked and checked it. The Wednesday the car didn't want to work even with new batteries in etc. I called the Hobby Group the Thursday and was asked to send a video of the car not working which I did immediately. Now remember this is happening 3 days of receiving the item and it not working. As far as I know if an item is defective within 7 days the supplier should replace it no questions asked. But not with the Hobby Group. First I needed to send this video, then after 1 week I needed to call them the Thursday to find ot what was happening as i didnt receive any reply to my email with the video. Well instantly I get a mail informing me that the delivery company will collect the item. All the time I was under the impression that on collection I would receive a new car. But to my surprise after once again another week later (2weeks now) I need to call The Hobby Group to find out why the courier company hasn't collected yet. Now I get the whole run around story from and agent that they work on the courier company schedule blah blah blah. Also I may not speak to a supervisor or manager as they don't have phones and the agent can't make decision. Now Hello in this day and age , what manager or supervisor of an online company does not have a phone? Now to put a cherry on top , the agent tells me the courier will collect and only after The Hobby GRoup assesses the car only then will a replacement be sent. Now, no man this is not on. I haven't even used the item for 3 days and now after 3 weeks of running around and following up from my side I get told this ****. Yet believe me the next debit order is due in 1 week , they will want the money. What kind of thieving is this. you dispacth a defective item and then you still give the customer the run around. But you do not hesititate when it comes to receiving the debits.