Unable To Recharge

Location/place: Allahabad, Up East

Name of company/service: Tata Docomo

I have been facing a severe problem for around One week . I am unable to recharge my phone. I contacted the customer care and they say “Sir, Your phone is catching signals from Vodafone . Please restart your phone and manually select our network” . I did the same, still no use. My number is 9044262621 . To add to my agony, I can’t call customer care. Whenever I do, they say “executives are busy” and disconnect.