Avoid! They appear to be ****mers

I handed my phone over to phonetradr for them to list on their platform for sale in April. About two weeks ago I received an offer for the phone which was lower than I had listed the phone for but accepted. There has been no communication from phonetradr since then. The listing is now greyed out when I try check it. Not sure what that means. Phonetradr is not reachable via the phone number or WhatsApp number listed on their website. They also do not respond to emails. Starting to feel that I may have been ****med. Businesses like this should not be allowed to operate in this country. Will go to the authorities if there is no resolution by the end of the week. Would not recommend for sellers or buyers