Correction of name in 7/12

I bought a plot in PCMC Charholi Bk. village in 2010. My name appeared in 7/12 document also. This year in April, when I checked my name in 'on line' record, my surname is mentioned as Bikari instead of Birari. When I went to Talathi office, they said it is a mistake & I need to apply for correction to Tahasildar PCMC, which I did so. After a lot of follow up, the matter was sent to circle office who, took my statement along with copy of sale deed. Then Tahasildar sent an order to Talathi to correct my surname taking affidavit. On rigorous follow up & submitting affidavit along with sale deed copy with Talathi, I learnt from him that there are 3 updates pending for on line 'Ferfar' hence, the updation is not possible now. It will be done only when these pending updates are complete. Firstly, the mistake is from the talathi office. Last 5 months, I had numerous visits/phone calls to different authorities. Many time talathi office is closed for no reasons, no phone available, no work times/closing times available. People have to travel 25 kms just to know that the office is closed. This is for no mistake of mine & authorities don't have time to listen as well do correct job. Is this whole issue is correct?