The defender joined the Hoops from Anzhi Makhachkala in January for a club-record £12.5m fee and reportedly signed a £100,000-a-week contract with the Londoners.
Samba was at fault for two of Fulham's goals during QPR's west London derby defeat on Monday and was thus the subject of money-related abuse on Twitter.
However, the 29-year-old has insisted that his Rangers salary is irrelevant to his level of performance and encouraged the club's supporters to get behind the team.
He tweeted: "All you keep talking about 100 k performance,tell me what is a 100k performance? We as players go out and give our all. We do are best every week,what I get payed has nothing to do with any of you, as for my price tag I didn't put a price on my head, grow up pls.
"U all moan about players and wages,but we don't just entertain u we entertain millions around the world,with out us what would u tweet about
"We play this sport as players that we love but also is a job,we keep millions happy on a sat,we get payed to entertain u all. Just some most then others hope u understand,fed up with the money tweets get over it and support the team,good nite."
Samba had previously tweeted an apology for his mistakes made during the match at Craven Cottage.