Swim swap and contract cancellation

Please help my mom had an Edgars account, now she lost her phone and needs a swim swap done urgently she has been waiting for over a week for the swim swap RMCS they don't answer their calls at all and they say the have log the query but it's not done we need help my mom's number should be ********** 535 please contact her on ********** 7076.

Please help Asap