Anil Basu,former CPM MP,is yet to reply to the chief electoral officers notice asking for an explanation for his remarks about Mamata Banerjee. Officials had to paste the notice on his house last week because there was no one to receive the document. Basu,in fact,denied having received it. We have received no response from Basu. We have not yet decided on what action should be taken against him, said Sunil Kumar Gupta,chief electoral officer.