Delta Courier Express Services — Fake call asking to pay huge amount as clearance to receive a package

Dear Sir
I have recently got a call from a lady from the number [protected] asking me to send an amount of Rs 26000 to the following bank account details : Account name: Sona khamzakap Ngaite, A/c no [protected], Federal bank, Delhi branch, as a clearance amount to receive a package from my recent FB friend Dr. Dave Erickson from Munich Germany. I have accepted his request recently as his profile shows that he is a Doctor .Even I am a Doctor and am conducting an online webinar education program for Doctors and this is the reason why I got connected to him the same way I got connected to many other Doctors as a part of the program. I have made the above transaction and when I asked them for the receipt, they asked me to send the screen shot to the sender i.e, Dr. Dave Erickson and said he will send it to his agency, which I have done. After some time I again got a call from the same number telling me that there is hard cash of 70, 000 $ in it apart from the expensive gifts for which I had to pay a penalty of Rs 90, 000. Then I had called up Dave and said unless I get the receipt of previous Rs 26000 which I had paid earlier I will not pay the remaining 90000. I started getting doubts on him and also asked him to share the receipt which he must have received from Delta services when he booked the package. He said that they have not given him any receipt but told me that he will ask the company to send the receipt for the previous amount. As soon as he put down the phone within 5 minutes I got a mail from Delta services which I have attached under. I felt everything suspicious including Delta services, Dr. Dave etc. I called the number which is provided in your website yesterday, someone answered the call, I told him how the receipt looks like and he said that it a false receipt and not to pay anything. I have not paid the remaining 90000. But repeatedly I got messages from Dr. Dave emotionally blackmailing me that he will cut himself and he will be jailed etc etc. I finally blocked his call and I thought I should lodge a complaint so that the others also will understand that such things are happening and will not fall a prey to such criminals and land up in their trap.