In a series of tweets, the Congress vice-president said, "First laughter now tears! Mediocrity comes face to face with reality."
"If trucks go off the roads, supply of essentials across the country will be paralysed. Hope Mr Modi has a plan for this," he said in another tweet while pointing at the liquidity crunch.
Gandhi had earlier tweeted about a smiling Modi during the latter's visit to Japan recently.
The Prime Minister got emotional while addressing a function at Panaji today over the problems being faced by people after the demonetisation of Rs 500 and Rs 1,000 currency notes.
More From This Section
He urged the people to bear with him till December 30, saying, "I will give you the India you desired."
Congress leader Anand Sharma, too, hit out at the PM and said, "He (Modi) has created a propaganda and scripted India's financial chaos and anarchy."
He also alleged that the Modi government had sounded off those close to them about the demonetisation move.
The former Union minister also attacked the PM for calling majority of the country corrupt.
"In a country where majority of transactions are cash-oriented, is he trying to say that is black money? The farmers of this country, who sell and buy in cash, they work hard.
(Reopens DEL 64)
Congress leaders Shashi Tharoor and Ahmed Patel also took jibes at the Prime Minister over his government's demonetisation move.
Tharoor hit out at Modi for talking about the need to shift to plastic currency.
"Our government wants to move towards a cashless economy. Great start: No cash in ATMs. No cash in banks. No cash with people. Successful PM!," he said in a tweet.
Patel tweeted a photograph of people in long queues at banks and ATMs and wrote, "Someone has said scamsters are queueing in front of banks, ATMs.