No refund from rain

I took out a rain 5G contract in December knowing that I had a month in which I could cancel the contract and return the router should the speeds not be sufficient. I tried it for a week but wasn’t achieving the speeds that were promised (no fault of rain, my housejust out of decent coverage). I called them to advise I ouodnt be going ahead with the contract and no questions asked they agreed to collect the router and refund me. The router was returned however I have still,had debit orders deducted off my bank account for about 3 months after that. After countless calls, emails and Facebook messages no one has advised or offered to help me het my money back. I am beyond frustrated and angry. Do not use this company, they are ******* who will not refund owed monies.