Worst service, experience and process of buying and returning products from TFG

I am urgently looking for the contact details of someone in TFG management department. For the past 3 weeks I have had the worst experience in returning stuff bought online, after many The Fix stores didn't have enough cash in their register to do a refund. I have already contacted customer service numerous times (I have the entire email thread as proof), but 3 weeks now nothing has happened, no couriers have arrived to pick up my items, despite the fact that it keeps on being promised. I am so frustrated by this situation, process and service so far. I cannot believe how hard it's been just doing a refund!