Failed to repay my money it's 4 months already that I'm waiting for a refund

I have waiting more than 4 months for my refund this is the worst service I have ever seen in my life No one responds to your emails.no one responds to WhatsApp or any other channel When they do reply on WhatsApp channel they tell me I will get my money in the next 45 working days it's been more than 4months yet no reply no money no nothing. I need my money it's my money you guys failed to come and install now I have to beg for my own money aswell. It's not fair it's not like I'm asking you guys for money it belongs to me but I have to beg for my own money u guys don't even have a customer care number how ridiculous is that when u a business but never reply or even have a contact number