Useless helpline and late refund

I app**** for a refund on the 7th of April after being told I needed to app**** in my home country. I submitted all the relevant documents for the refund and even showed that I obtained the exact same visa I app**** for with vfs in the exact same passport. When submitting, it was written that it would take 21 calendar days (not working days) to process and am yet to receive that. When I try to use the helpline to speak to an agent, I get cut off or the agent just abandons me on the line before they cut the call. I also noted that the helpline takes 5 whole minutes giving information that is not necessary before you get to choose options to then be cut off by the helpline. It is very evident that the helpline is structured as a deterrent for calls as its not actually functional. I really just want to get my refund.