What are the current requirements for proving income when applying for a retirement visa extension in Thailand?

In and out of Burirum immigration in 35 mins with a year's extension to my retirement visa

A reentry stamp and my 90 day. Yesterday downloaded a TM 7 form and handed it in with all my documents

He put the form to on side and gave me another form to fill in plus 2 more forms printed off with my photo on both

Then another officer has started looking at my proof of income letter ,he's worked my income at 42 baht to the pound and it just scraped in

When I explained its 43,5 today not in this office it's 42

He then asked me where's your proof that they worked my proof of income out from. Fortunately I had the letter from the consolent with my bank statements from my 2 British accounts

I showed him every under lined was money in and all the unmarked amounts where either paid in Thai shops or Thai ATM machines

He went on to tell me that this was no good

I pointed at the boss and told him it was good enough for him last year and good enough for Kap choeng/churn the year before

He then said he'd let it go this year but next year he wants all my income put into a Thai bank

Sorry so long winded what good is a proof of income letter if he wants to see my pensions transferred to a Thai bank account before spending