Very weird experience

I had a very weird experience with webuycars. Upon a request of selling my car , i got an offer by email and a call by an agent , i said the offer was too little and he cane to view and test drive the . 2 days after I got a call from another company saying they do partner with webuycars and they can give me a better offer. I never received an offer from webuycars after the test drive and upon my enquiry a week after I was told that there is a problem with my car and they won'tgive me any offer. Funny enough My car is fully serviced and well kept with no issues at all . What happened show a lack of professionalism . Too weird.