My Field is Finance / accounting / Tax Consulting.

I understand the part of they will not release me but based on the contract, I can confirm that the restriction is only for other professional services firm (not including, other companies, meaning I can join IBM or Microsoft...as accountant, finance, tax). Here is the exact text of the clause "the Employee acknowledges, agrees, undertakes and covenants that it shall not engage in employment or other professional activity, either directly or indirectly, by way of subcontract, consultancy agreement or otherwise, with any other large accounting or business advisory firm or organisation, including its successors, that provides professional services in competition with the Employer in the territory/country and for the period referred".