WednesdayLiverpool     1 - 3     Swansea CityNorwich City     2 - 1     Tottenham Chelsea         5 - 4     Man UnitedLONDON - Chelsea coach Roberto Di Matteo has questioned his team’s treatment at the hands of match officials in the wake of the club’s controversial Premier League defeat by Manchester United at the weekend.Di Matteo’s side gained swift revenge by beating Alex Ferguson’s men 5-4 after extra time to reach the last eight of the League Cup on Wednesday – three days after the 3-2 loss that was marked by the dismissal of Chelsea’s Branislav Ivanovic and Fernando Torres by referee Mark Clattenburg.Chelsea subsequently lodged a formal complaint to the Football Association about comments directed by Clattenburg towards John Mikel Obi.Di Matteo refused to discuss that matter, which is also being investigated by the police.But, drawing parallels with the defeat at Queens Park Rangers 12 months ago, which also ended with the dismissal of two Chelsea players, Di Matteo questioned whether his side were being treated fairly."It’s incredible we got two players sent off in one game,” he said. "At QPR, one was correct and one was probably not correct."And on Sunday (against United) one was harsh and probably correct and the second one was 100 percent not correct, so it’s incredible that always it’s Chelsea Football Club. So maybe that’s something to think about, you know?”Chelsea were awarded two penalties by referee Lee Mason in the second meeting with United on Wednesday, the second of which was converted by Eden Hazard in the final seconds to take the tie into extra time.Chelsea fought back three times as first Ryan Giggs, Javier Hernandez and then Nani put United ahead, with the hosts replying through David Luiz’s penalty, Gary Cahill’s header and then Hazard’s late spot-kick.Daniel Sturridge and Ramires put the hosts in control in extra time and Giggs’ 120th-minute penalty came too late to affect the outcome.