BAD SERVICE FROM WEBUYCARS

So i have bought a car in October at the Silver Lakes branch. Did my own application and submitted everything . Then was assigned an F&I and Salesman . Alright so when I went to collect the car the licence disk was about to expire, they informed me and said they shall send it once it is solved . Had to make 1 million calls and send emails everyday only to get a response after a month whereas the car roadworthy and disk had expired . Well the F&I said she apologises and will get me a refund for all my transactions since they charged me for the transactions. 3 weeks later after my submission for the claim still nobody took the curtesy to communicate with me with regards to the process, took an initiative to call the Branch Manager and he said he cannot help as he is on leave. Till date, no one has responded to my query or refund after I communicated several times, even their complaints department could not help after I called numerous times .