Clarification: Will the Vat amount be included in the zakaat?

Q: A person gave me R100 of his zakaat and asked me to buy a zakaat hamper and give it on his behalf to the poor. I bought the hamper for R100 which was inclusive of 15% vat and thereafter gave it to a recipient of zakaat. Did R85 of the person's zakaat get discharged or did R100 of His zakaat get discharged?

Similarly, if zakaat vouchers are given to the poor and they make purchases with it from a specific shop to which zakaat money has been given, and the shop owner has been informed that he should give the poor who come to him items to the value of the zakaat vouchers, and the shop owner sells them the items for the full amount of the zakaat vouchers but deducts 15% of the money for vat, will the full amount of the zakaat vouchers be regarded as the zakaat discharged or will the amount less 15% be regarded as the zakaat discharged?

Doing things with ikhlaas (sincerity)

Q:

1. Does pleasure of our Prophet (SallAllahu 'Alayhi Wa Sallam), the pleasure of The Prophets ('Alayhim-us-Salaam), the pleasure of the Angels ('Alayhim-us-Salaam), and the pleasure of The Sahabaah (RaziyAllahu 'Anhum) count as part of Ikhlaas?

2. If someone does dhikr in a majlis together with other people so that Allah (SubhanaHu Wa Ta'alaa) can mention them in His majlis of Angels ('Alayhim-is-Salaam), does this ruin their Ikhlaas?

3. If a person starts Namaz with a weak but conscious intention that it is for Allah (SubhanaHu Wa Ta'alaa) but their heart feels weak towards praise and is affected by criticism if someone criticises their Namaz, does this mean he had not complete Ikhlaas? How can the heart be unaffected by praise and criticism?