Can I have your husband please?
He is giving you a generous amount of money, to be honest, I wonder if you arent a little greedy? Your husband seem totally sensible.
He has invested in property: a big house and a country house. He pools back money into his company. He has given you a salary of 15 k as a stay at home mum. It is therefore YOUR job to handle the domestic side of things, within the budget you are given.
In my opinion, budgeting and planning should be part of that job. And if you really want cushions, and curtains, you should budget and plan, and buy it from your "salary".
I dont understand how it is possible to get £2,200 per month, and not have utility bills to pay, not have tax to pay, ONLY groceries, clothing and petrol (for a car I am sure he pays MOT and insurance for)
I think you need to get a grip. Aside from the 2,2k you get, he needs to pay bills, such as electricity, gas, water, council tax and insurance on TWO properties and insurance and mot on two cars, he pays you birthday money and holidays.
How on earth can you not pop down to John Lewis and buy a few cushions?